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caa4d9908a Branch for developing Bitten client/server testing
[SVN r41004]
2007-11-10 22:53:12 +00:00
1306 changed files with 51837 additions and 81284 deletions

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@ -1,28 +1,17 @@
#==============================================================================
# Copyright (c) 2003-2011 Joel de Guzman
#
# Use, modification and distribution is subject to the Boost Software
# License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
# http://www.boost.org/LICENSE_1_0.txt)
#==============================================================================
project boost/libs/fusion/doc ;
import boostbook : boostbook ;
using quickbook ;
path-constant images_location : html ;
boostbook quickbook
:
fusion.qbk
:
<xsl:param>boost.root=../../../..
<xsl:param>boost.libraries=../../../libraries.htm
<xsl:param>chunk.section.depth=4
<xsl:param>chunk.first.sections=1
<xsl:param>toc.section.depth=3
<xsl:param>toc.max.depth=3
<xsl:param>generate.section.toc.level=4
<format>pdf:<xsl:param>boost.url.prefix=http://www.boost.org/doc/libs/release/libs/fusion/doc/html
<format>pdf:<xsl:param>img.src.path=$(images_location)/
;

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@ -1,23 +1,15 @@
[/==============================================================================
Copyright (C) 2001-2011 Joel de Guzman
Copyright (C) 2006 Dan Marsden
Use, modification and distribution is subject to the Boost Software
License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
http://www.boost.org/LICENSE_1_0.txt)
===============================================================================/]
[section Acknowledgements]
Special thanks to David Abrahams, Douglas Gregor, Hartmut Kaiser, Aleksey
Gurtovoy, Peder Holt, Daniel Wallin, Jaakko Jarvi, Jeremiah Willcock, Dan
Marsden, Eric Niebler, Joao Abecasis and Andy Little. These people are
Special thanks to David Abrahams, Douglas Gregor, Hartmut Kaiser, Aleksey
Gurtovoy, Peder Holt, Daniel Wallin, Jaakko Jarvi, Jeremiah Willcock, Dan
Marsden, Eric Niebler, Joao Abecasis and Andy Little. These people are
instrumental in the design and development of Fusion.
Special thanks to Ronald Garcia, the review manager and to all the people in the
boost community who participated in the review: Andreas Pokorny, Andreas Huber,
Jeff Flinn, David Abrahams, Pedro Lamarao, Larry Evans, Ryan Gallagher, Andy
Little, Gennadiy Rozental, Tobias Schwinger, Joao Abecasis, Eric Niebler, Oleg
Abrosimov, Gary Powell, Eric Friedman, Darren Cook, Martin Bonner and Douglas
Special thanks to Ronald Garcia, the review manager and to all the people in the
boost community who participated in the review: Andreas Pokorny, Andreas Huber,
Jeff Flinn, David Abrahams, Pedro Lamarao, Larry Evans, Ryan Gallagher, Andy
Little, Gennadiy Rozental, Tobias Schwinger, Joao Abecasis, Eric Niebler, Oleg
Abrosimov, Gary Powell, Eric Friedman, Darren Cook, Martin Bonner and Douglas
Gregor.
[endsect]

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[/==============================================================================
Copyright (C) 2001-2011 Joel de Guzman
Copyright (C) 2006 Dan Marsden
Copyright (C) 2006 Tobias Schwinger
Copyright (C) 2010 Christopher Schmidt
Use, modification and distribution is subject to the Boost Software
License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
http://www.boost.org/LICENSE_1_0.txt)
===============================================================================/]
[section Change log]
This section summarizes significant changes to the Fusion library.
* Sep 27, 2006: Added `boost::tuple` support. (Joel de Guzman)
* Nov 17, 2006: Added `boost::variant` support. (Joel de Guzman)
* Feb 15, 2007: Added functional module. (Tobias Schwinger)
* April 2, 2007: Added struct adapter. (Joel de Guzman)
* May 8, 2007: Added associative struct adapter. (Dan Marsden)
* Dec 20, 2007: Removed `boost::variant` support. After thorough
investigation, I think now that the move to make variant a
fusion sequence is rather quirky. A variant will always
have a size==1 regardless of the number of types it can contain
and there's no way to know at compile time what it contains.
Iterating over its types is simply wrong. All these imply that
the variant is *not* a fusion sequence. (Joel de Guzman)
* Oct 12, 2009: The accumulator is the first argument to the functor of
__fold__ and __accumulate__. (Christopher Schmidt)
* Oct 30, 2009: Added support for associative iterators and views. (Christopher
Schmidt)
* March 1, 2010: Added __adapt_struct_named__ and __adapt_struct_named_ns__
(Hartmut Kaiser)
* April 4, 2010: Added __array__ support, __adapt_tpl_struct__,
__adapt_assoc_tpl_struct__, __adapt_assoc_struct_named__ and
__adapt_assoc_struct_named_ns__ (Christopher Schmidt)
* April 5, 2010: Added __define_struct__, __define_tpl_struct__,
__define_assoc_struct__ and __define_assoc_tpl_struct__ (Christopher Schmidt)
* June 18, 2010: Added __reverse_fold__, __iter_fold__ and __reverse_iter_fold__
(Christopher Schmidt)
* October 7, 2010: Added __adapt_adt__, __adapt_tpl_adt__,
__adapt_assoc_adt__ and __adapt_assoc_tpl_adt__ (Joel de Guzman,
Hartmut Kaiser and Christopher Schmidt)
* August 29, 2011: Added support for segmented sequences and iterators (Eric Niebler)
* September 16, 2011: Added preprocessed files (using wave) to speed up
compilation (Joel de Guzman)
* October 8, 2011: Added adaptor for std::tuple (Joel de Guzman)
* October 10, 2011: Made map random access (Brandon Kohn)
* Sep 27, 2006: Added `boost::tuple` support.
* Nov 17, 2006: Added `boost::variant` support.
* Feb 15, 2007: Added functional module.
[endsect]

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[/==============================================================================
Copyright (C) 2001-2011 Joel de Guzman
Copyright (C) 2006 Dan Marsden
Use, modification and distribution is subject to the Boost Software
License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
http://www.boost.org/LICENSE_1_0.txt)
===============================================================================/]
[section Extension]
[section:ext_full The Full Extension Mechanism]
[section The Full Extension Mechanism]
The Fusion library is designed to be extensible, new sequences types can easily
be added. In fact, the library support for `std::pair`, `boost::array` and __mpl__
be added. In fact, the library support for `std::pair`, `boost::array` and __mpl__
sequences is entirely provided using the extension mechanism.
The process for adding a new sequence type to Fusion is:
@ -38,7 +30,7 @@ are going to use the type:
{}
};
}
We are going to pretend that this type has been provided by a 3rd party
library, and therefore cannot be modified. We shall work through all the
necessary steps to enable `example_struct` to serve as an __associative_sequence__
@ -60,9 +52,8 @@ tag type for operations involving our sequence. This is done by specializing
`traits::tag_of` for our sequence type.
#include <boost/fusion/support/tag_of_fwd.hpp>
#include <boost/fusion/include/tag_of_fwd.hpp>
namespace boost { namespace fusion { namespace traits {
namespace boost { namespace fusion { namespace traits {
template<>
struct tag_of<example_struct>
{
@ -70,13 +61,12 @@ tag type for operations involving our sequence. This is done by specializing
};
}}}
`traits::tag_of` also has a second template argument,
that can be used in conjuction with `boost::enable_if` to provide tag
`traits::tag_of` also has a second template argument,
that can be used in conjuction with `boost::enable_if` to provide tag
support for groups of related types. This feature is not necessary
for our sequence, but for an example see the code in:
#include <boost/fusion/adapted/array/tag_of.hpp>
#include <boost/fusion/include/tag_of.hpp>
#include <boost/fusion/sequence/adapted/mpl/tag_of.hpp>
[heading Designing a suitable iterator]
@ -108,7 +98,7 @@ A quick summary of the details of our iterator:
# The iterator is parameterized by the type it is iterating over, and the index of the current element.
# The typedefs `struct_type` and `index` provide convenient access to information we will need later in
the implementation.
# The typedef `category` allows the `traits::__category_of__` metafunction to establish
# The typedef `category` allows the `traits::__category_of__` metafunction to establish
the traversal category of the iterator.
# The constructor stores a reference to the `example_struct` being iterated over.
@ -121,7 +111,7 @@ add features to our implementation.
[heading A first couple of instructive features]
To start with, we will get the __result_of_value_of__ metafunction working. To
do this, we provide a specialization of the `boost::fusion::extension::value_of_impl` template for
do this, we provide a specialization of the `boost::fusion::extension::value_of_impl` template for
our iterator's tag type.
template<>
@ -146,15 +136,15 @@ our iterator's tag type.
The implementation itself is pretty simple, it just uses 2 partial specializations to
provide the type of the 2 different members of `example_struct`, based on the index of the iterator.
To understand how `value_of_impl` is used by the library we will look at the implementation of __result_of_value_of__:
To understand how `value_of_impl` is used by the library we will look at the implementation of __value_of__:
template <typename Iterator>
struct value_of
struct __value_of__
: extension::value_of_impl<typename detail::tag_of<Iterator>::type>::
template apply<Iterator>
{};
So __result_of_value_of__ uses __tag_dispatching__ to select an __mpl_metafunction_class__
So __value_of__ uses __tag_dispatching__ to select an __mpl_metafunction_class__
to provide its functionality. You will notice this pattern throughout the
implementation of Fusion.
@ -196,7 +186,7 @@ specialization of `deref_impl`.
}
The use of `deref_impl` is very similar to that of `value_of_impl`, but it also
provides some runtime functionality this time via the `call` static member function.
provides some runtime functionality this time via the `call` static member function.
To see how `deref_impl` is used, lets have a look at the implementation of __deref__:
namespace result_of
@ -217,25 +207,25 @@ To see how `deref_impl` is used, lets have a look at the implementation of __der
}
So again __result_of_deref__ uses __tag_dispatching__ in exactly the
same way as the __result_of_value_of__ implementation. The runtime functionality used
same way as the __value_of__ implementation. The runtime functionality used
by __deref__ is provided by the `call` static function of the selected
__mpl_metafunction_class__.
The actual implementation of `deref_impl` is slightly more complex than that of `value_of_impl`.
The actual implementation of `deref_impl` is slightly more complex than that of `value_of_impl`.
We also need to implement the `call` function, which returns a reference
to the appropriate member of the underlying sequence. We also require a little
bit of metaprogramming to return `const` references if the underlying sequence
is const.
[note Although there is a fair amount of left to do to produce a fully fledged
Fusion sequence, __result_of_value_of__ and __deref__ illustrate all the signficant concepts
Fusion sequence, __value_of__ and __deref__ illustrate all the signficant concepts
required. The remainder of the process is very repetitive, simply requiring
implementation of a suitable `xxxx_impl` for each feature `xxxx`.
]
[heading Implementing the remaining iterator functionality]
Ok, now we have seen the way __result_of_value_of__ and __deref__ work, everything else will work
Ok, now we have seen the way __value_of__ and __deref__ work, everything else will work
in pretty much the same way. Lets start with forward iteration,
by providing a `next_impl`:
@ -269,7 +259,7 @@ __random_access_iterator__ `distance_impl` and `advance_impl` also need to be pr
in order to satisfy the necessary complexity guarantees. As our iterator is
a __random_access_iterator__ we will have to implement all of these functions.
Full implementations of `prior_impl`, `advance_impl`, `distance_impl` and `equal_to_impl` are
Full implementations of `prior_impl`, `advance_impl`, `distance_impl` and `equal_to_impl` are
provided in the example code.
[heading Implementing the intrinsic functions of the sequence]
@ -287,7 +277,7 @@ an `impl` type specialized for our sequence tag:
We've some similar formalities to complete, providing `category_of_impl` so Fusion
can correctly identify our sequence type, and `is_view_impl` so Fusion can correctly
identify our sequence as not being a __view__ type. Implementations are
identify our sequence as not being a __view__ type. Implementations are
provide in the example code.
Now we've completed some formalities, on to more interesting features. Lets get
@ -312,21 +302,20 @@ our sequence.
The implementation uses the same ideas we have applied throughout, in this case
we are just creating one of the iterators we developed earlier, pointing to the
first element in the sequence. The implementation of __end__ is very similar, and
first element in the sequence. The implementation of __end__ is very similar, and
is provided in the example code.
For our __random_access_sequence__ we will also need to implement `size_impl`,
`value_at_impl` and `at_impl`.
[heading Enabling our type as an associative sequence]
[heading Enabling our type as an associative container]
In order for `example_struct` to serve as an associative forward sequence,
we need to adapt the traversal category of our sequence and our iterator
accordingly and enable 3 intrinsic sequence lookup features, __at_key__,
__value_at_key__ and __has_key__. We also need to enable 3 iterator lookup
features, __result_of_key_of__, __result_of_value_of_data__ and __deref_data__.
In order for `example_struct` to serve as an associative container,
we need to enable 3 lookup features, __at_key__, __value_at_key__ and __has_key__.
We also need to provide an implementation of the `is_associative` trait
so that our sequence can be correctly identified as an associative container.
To implement `at_key_impl` we need to associate the `fields::name` and `fields::age`
To implement `at_key_impl` we need to associate the `fields::age` and `fields::age`
types described in the __quick_start__ guide with the appropriate members of `example_struct`.
Our implementation is as follows:
@ -371,14 +360,15 @@ Its all very similar to the implementations we've seen previously,
such as `deref_impl` and `value_of_impl`. Instead of identifying
the members by index or position, we are now selecting them using
the types `fields::name` and `fields::age`. The implementations of
the other functions are equally straightforward, and are provided in
the example code.
`value_at_key_impl` and `has_key_impl` are equally straightforward,
and are provided in the example code, along with an implementation
of `is_associative_impl`.
[heading Summary]
We've now worked through the entire process for adding a new random
access sequence and we've also enabled our type to serve as an associative
sequence. The implementation was slightly longwinded, but followed
container. The implementation was slightly longwinded, but followed
a simple repeating pattern.
The support for `std::pair`, __mpl__ sequences, and `boost::array` all
@ -387,102 +377,120 @@ for a variety of types.
[endsect]
[section Sequence Facade]
[section Macros]
[section BOOST_FUSION_ADAPT_STRUCT]
[heading Description]
The __sequence_facade__ template provides an intrusive mechanism for
producing a conforming Fusion sequence.
BOOST_FUSION_ADAPT_STRUCT is a macro that can be used to generate all the
necessary boilerplate to make an arbitrary struct into a __random_access_sequence__.
[heading Synopsis]
template<typename Derived, typename TravesalTag, typename IsView = mpl::false_>
struct sequence_facade;
BOOST_FUSION_ADAPT_STRUCT(
struct_name
(member_type0, member_name0)
(member_type1, member_name1)
...
)
[heading Usage]
The user of __sequence_facade__ derives his sequence type from a specialization of __sequence_facade__ and passes the derived sequence type as the first template parameter. The second template parameter should be the traversal category of the sequence being implemented. The 3rd parameter should be set to `mpl::true_` if the sequence is a view.
[heading Semantics]
BOOST_FUSION_ADAPT_STRUCT(
struct_name,
(member_type0, member_name0)
(member_type1, member_name1)
...
)
The user must the implement the key expressions required by their sequence type.
The above macro generates the necessary code to adapt `struct_name`
as a model of __random_access_sequence__. The sequence of `(member_typeN, member_nameN)`
pairs declare the type and names of each of the struct members that will be
part of the sequence.
[table Parameters
[[Name][Description]]
[[`sequence`, `Seq`][A type derived from __sequence_facade__]]
[[`N`][An __mpl_integral_constant__]]
]
[table Key Expressions
[[Expression][Result]]
[[`sequence::template begin<Seq>::type`][The type of an iterator to the beginning of a sequence of type `Seq`]]
[[`sequence::template begin<Seq>::call(seq)`][An iterator to the beginning of sequence `seq`]]
[[`sequence::template end<Seq>::type`][The type of an iterator to the end of a sequence of type `Seq`]]
[[`sequence::template end<Seq>::call(seq)`][An iterator to the end of sequence `seq`]]
[[`sequence::template size<Seq>::type`][The size of a sequence of type `Seq` as an __mpl_integral_constant__]]
[[`sequence::template size<Seq>::call(seq)`][The size of sequence `seq`]]
[[`sequence::template empty<Seq>::type`][Returns `mpl::true_` if `Seq` has zero elements, `mpl::false_` otherwise.]]
[[`sequence::template empty<Seq>::call`][Returns a type convertible to `bool` that evaluates to true if the sequence is empty, else, evaluates to false. ]]
[[`sequence::template at<Seq, N>::type`][The type of element `N` in a sequence of type `Seq`]]
[[`sequence::template at<Seq, N>::call(seq)`][Element `N` in sequence `seq`]]
[[`sequence::template value_at<Sequence, N>::type`][The type of the `N`th element in a sequence of type `Seq`]]
]
[heading Include]
#include <boost/fusion/sequence/sequence_facade.hpp>
#include <boost/fusion/include/sequence_facade.hpp>
[heading Example]
A full working example using __sequence_facade__ is provided in triple.cpp in the extension examples.
[endsect]
[section Iterator Facade]
[heading Description]
The __iterator_facade__ template provides an intrusive mechanism for
producing a conforming Fusion iterator.
[heading Synopsis]
template<typename Derived, typename TravesalTag>
struct iterator_facade;
[heading Usage]
The user of iterator_facade derives his iterator type from a specialization of iterator_facade and passes the derived iterator type as the first template parameter. The second template parameter should be the traversal category of the iterator being implemented.
The user must the implement the key expressions required by their iterator type.
[table Parameters
[[Name][Description]]
[[`iterator`, `It`, `It1`, `It2`][A type derived from __iterator_facade__]]
[[`N`][An __mpl_integral_constant__]]
]
[table Key Expressions
[[Expression][Result][Default]]
[[`iterator::template value_of<It>::type`][The element stored at iterator position `It`][None]]
[[`iterator::template deref<It>::type`][The type returned when dereferencing an iterator of type `It`][None]]
[[`iterator::template deref<It>::call(it)`][Dereferences iterator `it`][None]]
[[`iterator::template next<It>::type`][The type of the next element from `It`][None]]
[[`iterator::template next<It>::call(it)`][The next iterator after `it`][None]]
[[`iterator::template prior<It>::type`][The type of the next element from `It`][None]]
[[`iterator::template prior<It>::call(it)`][The next iterator after `it`][None]]
[[`iterator::template advance<It, N>::type`][The type of an iterator advanced `N` elements from `It`][Implemented in terms of `next` and `prior`]]
[[`iterator::template advance<It, N>::call(it)`][An iterator advanced `N` elements from `it`][Implemented in terms of `next` and `prior`]]
[[`iterator::template distance<It1, It2>::type`][The distance between iterators of type `It1` and `It2` as an __mpl_integral_constant__][None]]
[[`iterator::template distance<It1, It2>::call(it1, it2)`][The distance between iterator `it1` and `it2`][None]]
[[`iterator::template equal_to<It1, It2>::type`][Returns `mpl::true_` if `It1` is equal to `It2`, `mpl::false_` otherwise.][`boost::same_type<It1, It2>::type`]]
[[`iterator::template equal_to<It1, It2>::call(it1, it2)`][Returns a type convertible to `bool` that evaluates to `true` if `It1` is equal to `It2`, `false` otherwise.][`boost::same_type<It1, It2>::type()`]]
[[`iterator::template key_of<It>::type`][The key type associated with the element from `It`][None]]
[[`iterator::template value_of_data<It>::type`][The type of the data property associated with the element from `It`][None]]
[[`iterator::template deref_data<It>::type`][The type that will be returned by dereferencing the data property of the element from `It`][None]]
[[`iterator::template deref_data<It>::call(it)`][Deferences the data property associated with the element referenced by `it`][None]]
]
The macro should be used at global scope, and `struct_name` should be the fully
namespace qualified name of the struct to be converted.
[heading Header]
#include <boost/fusion/iterator/iterator_facade.hpp>
#include <boost/fusion/include/iterator_facade.hpp>
#include <boost/fusion/adapted/struct/adapt_struct.hpp>
[heading Example]
A full working example using __iterator_facade__ is provided in triple.cpp in the extension examples.
namespace demo
{
struct employee
{
std::string name;
int age;
};
}
// demo::employee is now a Fusion sequence
BOOST_FUSION_ADAPT_STRUCT(
demo::employee
(std::string, name)
(int, age))
[endsect]
[section BOOST_FUSION_ADAPT_ASSOC_STRUCT]
[heading Description]
BOOST_FUSION_ADAPT_ASSOC_STRUCT is a macro that can be used to generate all the
necessary boilerplate to make an arbitrary struct into a model of __random_access_sequence__
and __associative_sequence__.
[heading Synopsis]
BOOST_FUSION_ADAPT_ASSOC_STRUCT(
struct_name
(member_type0, member_name0, key_type0)
(member_type1, member_name1, key_type1)
...
)
[heading Semantics]
BOOST_FUSION_ADAPT_ASSOC_STRUCT(
struct_name
(member_type0, member_name0, key_type0)
(member_type1, member_name1, key_type1)
...
)
The above macro generates the necessary code to adapt `struct_name`
as a model of __random_access_sequence__ and __associative_sequence__.
The sequence of `(member_typeN, member_nameN, key_typeN)`
triples declare the type, name and key type of each of the struct members
that will be part of the sequence.
The macro should be used at global scope, and `struct_name` should be the fully
namespace qualified name of the struct to be converted.
[heading Header]
#include <boost/fusion/adapted/struct/adapt_assoc_struct.hpp>
[heading Example]
namespace demo
{
struct employee
{
std::string name;
int age;
};
}
namespace keys
{
struct name;
struct age;
}
// demo::employee is now a Fusion sequence
// It is also an associative sequence with
// keys keys::name and keys::age present.
BOOST_FUSION_ADAPT_ASSOC_STRUCT(
demo::employee
(std::string, name, keys::name)
(int, age, keys::age))
[endsect]
[endsect]

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@ -1,17 +1,8 @@
[/==============================================================================
Copyright (C) 2001-2011 Joel de Guzman
Copyright (C) 2006 Dan Marsden
Copyright (C) 2010 Christopher Schmidt
Use, modification and distribution is subject to the Boost Software
License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
http://www.boost.org/LICENSE_1_0.txt)
===============================================================================/]
[library Fusion
[quickbook 1.3]
[version 2.2]
[version 2.0]
[authors [de Guzman, Joel], [Marsden, Dan], [Schwinger, Tobias]]
[copyright 2001 2002 2003 2004 2005 2006 2011 Joel de Guzman, Dan Marsden, Tobias Schwinger]
[copyright 2001 2002 2003 2004 2005 2006 2007 Joel de Guzman, Dan Marsden, Tobias Schwinger]
[purpose Statically Typed Heterogeneous Data Structures and Algorithms]
[license
Distributed under the Boost Software License, Version 1.0.
@ -43,7 +34,7 @@
[def __boost_any__ [@http://boost.org/doc/html/any.html Boost.Any]]
[def __new_iterator_concepts__ [@http://boost.org/libs/iterator/doc/new-iter-concepts.html New Iterator Concepts]]
[def __boost_array_library__ [@http://www.boost.org/doc/html/array.html Boost.Array Library]]
[def __boost_variant_library__ [@http://www.boost.org/doc/html/variant.html Boost.Variant Library]]
[def __boost_variant_library__ [@http://www.boost.org/doc/html/variant.html Boost.Variant Library]]
[def __boost_tuple_library__ [@http://www.boost.org/libs/tuple/doc/tuple_users_guide.html Boost.Tuple Library]]
[def __boost_ref__ [@http://www.boost.org/doc/html/ref.html Boost.Ref]]
[def __boost_ref_call__ [@http://www.boost.org/doc/html/ref.html `ref`]]
@ -51,8 +42,6 @@
[def __boost_result_of_call__ [@http://www.boost.org/libs/utility/utility.htm#result_of `boost::result_of`]]
[def __boost_enable_if__ [@http://www.boost.org/libs/utility/enable_if.html Boost.EnableIf utility]]
[def __boost_shared_ptr_call__ [@http://www.boost.org/libs/smart_ptr/shared_ptr.htm `boost::shared_ptr`]]
[def __boost_func_forward__ [@http://www.boost.org/libs/functional/forward/doc/html/index.html Boost.Functional/Forward]]
[def __boost_func_factory__ [@http://www.boost.org/libs/functional/factory/doc/html/index.html Boost.Functional/Factory]]
[def __std_pair_doc__ [@http://www.sgi.com/tech/stl/pair.html `std::pair`]]
[def __std_plus_doc__ [@http://www.sgi.com/tech/stl/plus.html `std::plus`]]
[def __std_minus_doc__ [@http://www.sgi.com/tech/stl/minus.html `std::minus`]]
@ -76,214 +65,189 @@
[def __pair__ [link fusion.support.pair `pair`]]
[def __fusion_make_pair__ [link fusion.support.pair `make_pair`]]
[def __iterator__ [link fusion.iterator Iterator]]
[def __iterator_concepts__ [link fusion.iterator.concepts Iterator Concepts]]
[def __forward_iterator__ [link fusion.iterator.concepts.forward_iterator Forward Iterator]]
[def __bidirectional_iterator__ [link fusion.iterator.concepts.bidirectional_iterator Bidirectional Iterator]]
[def __random_access_iterator__ [link fusion.iterator.concepts.random_access_iterator Random Access Iterator]]
[def __associative_iterator__ [link fusion.iterator.concepts.associative_iterator Associative Iterator]]
[def __iterator__ [link fusion.iterators Iterator]]
[def __iterator_concepts__ [link fusion.iterators.concepts Iterator Concepts]]
[def __forward_iterator__ [link fusion.iterators.concepts.forward_iterator Forward Iterator]]
[def __bidirectional_iterator__ [link fusion.iterators.concepts.bidirectional_iterator Bidirectional Iterator]]
[def __random_access_iterator__ [link fusion.iterators.concepts.random_access_iterator Random Access Iterator]]
[def __next__ [link fusion.iterator.functions.next `next`]]
[def __prior__ [link fusion.iterator.functions.prior `prior`]]
[def __advance__ [link fusion.iterator.functions.advance `advance`]]
[def __advance_c__ [link fusion.iterator.functions.advance_c `advance_c`]]
[def __distance__ [link fusion.iterator.functions.distance `distance`]]
[def __deref__ [link fusion.iterator.functions.deref `deref`]]
[def __deref_data__ [link fusion.iterator.functions.deref_data `deref_data`]]
[def __next__ [link fusion.iterators.functions.next `next`]]
[def __prior__ [link fusion.iterators.functions.prior `prior`]]
[def __advance__ [link fusion.iterators.functions.advance `advance`]]
[def __advance_c__ [link fusion.iterators.functions.advance_c `advance_c`]]
[def __distance__ [link fusion.iterators.functions.distance `distance`]]
[def __deref__ [link fusion.iterators.functions.deref `deref`]]
[def __result_of_next__ [link fusion.iterator.metafunctions.next `result_of::next`]]
[def __result_of_prior__ [link fusion.iterator.metafunctions.prior `result_of::prior`]]
[def __result_of_equal_to__ [link fusion.iterator.metafunctions.equal_to `result_of::equal_to`]]
[def __result_of_advance__ [link fusion.iterator.metafunctions.advance `result_of::advance`]]
[def __result_of_advance_c__ [link fusion.iterator.metafunctions.advance_c `result_of::advance_c`]]
[def __result_of_distance__ [link fusion.iterator.metafunctions.distance `result_of::distance`]]
[def __result_of_deref__ [link fusion.iterator.metafunctions.deref `result_of::deref`]]
[def __result_of_value_of__ [link fusion.iterator.metafunctions.value_of `result_of::value_of`]]
[def __result_of_key_of__ [link fusion.iterator.metafunctions.key_of `result_of::key_of`]]
[def __result_of_value_of_data__ [link fusion.iterator.metafunctions.value_of_data `result_of::value_of_data`]]
[def __result_of_deref_data__ [link fusion.iterator.metafunctions.deref_data `result_of::deref_data`]]
[def __result_of_next__ [link fusion.iterators.metafunctions.next `result_of::next`]]
[def __result_of_prior__ [link fusion.iterators.metafunctions.prior `result_of::prior`]]
[def __result_of_equal_to__ [link fusion.iterators.metafunctions.equal_to `result_of::equal_to`]]
[def __result_of_advance__ [link fusion.iterators.metafunctions.advance `result_of::advance`]]
[def __result_of_advance_c__ [link fusion.iterators.metafunctions.advance_c `result_of::advance_c`]]
[def __result_of_distance__ [link fusion.iterators.metafunctions.distance `result_of::distance`]]
[def __result_of_deref__ [link fusion.iterators.metafunctions.deref `result_of::deref`]]
[def __result_of_value_of__ [link fusion.iterators.metafunctions.value_of `result_of::value_of`]]
[def __value_of__ [link fusion.iterators.metafunctions.value_of `value_of`]]
[def __sequence__ [link fusion.sequence Sequence]]
[def __sequence_concepts__ [link fusion.sequence.concepts Sequence Concepts]]
[def __traversal_concept__ [link fusion.sequence.concepts.traversal Sequence Traversal Concept]]
[def __associativity_concept__ [link fusion.sequence.concepts.associativity Sequence Associativity Concept]]
[def __forward_sequence__ [link fusion.sequence.concepts.forward_sequence Forward Sequence]]
[def __bidirectional_sequence__ [link fusion.sequence.concepts.bidirectional_sequence Bidirectional Sequence]]
[def __random_access_sequence__ [link fusion.sequence.concepts.random_access_sequence Random Access Sequence]]
[def __associative_sequence__ [link fusion.sequence.concepts.associative_sequence Associative Sequence]]
[def __sequence__ [link fusion.sequences Sequence]]
[def __sequence_concepts__ [link fusion.sequences.concepts Sequence Concepts]]
[def __traversal_concept__ [link fusion.sequences.concepts.traversal Sequence Traversal Concept]]
[def __associativity_concept__ [link fusion.sequences.concepts.associativity Sequence Associativity Concept]]
[def __forward_sequence__ [link fusion.sequences.concepts.forward_sequence Forward Sequence]]
[def __bidirectional_sequence__ [link fusion.sequences.concepts.bidirectional_sequence Bidirectional Sequence]]
[def __random_access_sequence__ [link fusion.sequences.concepts.random_access_sequence Random Access Sequence]]
[def __associative_sequence__ [link fusion.sequences.concepts.associative_sequence Associative Sequence]]
[def __containers__ [link fusion.container Container]]
[def __vector__ [link fusion.container.vector `vector`]]
[def __cons__ [link fusion.container.cons `cons`]]
[def __list__ [link fusion.container.list `list`]]
[def __set__ [link fusion.container.set `set`]]
[def __map__ [link fusion.container.map `map`]]
[def __containers__ [link fusion.sequences.containers Containers]]
[def __vector__ [link fusion.sequences.containers.vector `vector`]]
[def __cons__ [link fusion.sequences.containers.cons `cons`]]
[def __list__ [link fusion.sequences.containers.list `list`]]
[def __set__ [link fusion.sequences.containers.set `set`]]
[def __map__ [link fusion.sequences.containers.map `map`]]
[def __view__ [link fusion.view View]]
[def __views__ [link fusion.view Views]]
[def __single_view__ [link fusion.view.single_view `single_view`]]
[def __filter_view__ [link fusion.view.filter_view `filter_view`]]
[def __iterator_range__ [link fusion.view.iterator_range `iterator_range`]]
[def __joint_view__ [link fusion.view.joint_view `joint_view`]]
[def __transform_view__ [link fusion.view.transform_view `transform_view`]]
[def __reverse_view__ [link fusion.view.reverse_view `reverse_view`]]
[def __zip_view__ [link fusion.view.zip_view `zip_view`]]
[def __view__ [link fusion.sequences.views View]]
[def __views__ [link fusion.sequences.views Views]]
[def __single_view__ [link fusion.sequences.views.single_view `single_view`]]
[def __filter_view__ [link fusion.sequences.views.filter_view `filter_view`]]
[def __iterator_range__ [link fusion.sequences.views.iterator_range `iterator_range`]]
[def __joint_view__ [link fusion.sequences.views.joint_view `joint_view`]]
[def __transform_view__ [link fusion.sequences.views.transform_view `transform_view`]]
[def __reverse_view__ [link fusion.sequences.views.reverse_view `reverse_view`]]
[def __zip_view__ [link fusion.sequences.views.zip_view `zip_view`]]
[def __array__ [link fusion.adapted.array array]]
[def __std_pair__ [link fusion.adapted.std__pair `std::pair`]]
[def __boost_array__ [link fusion.adapted.boost__array `boost::array`]]
[def __mpl_sequence__ [link fusion.adapted.mpl_sequence mpl sequence]]
[def __adapt_tpl_struct__ [link fusion.adapted.adapt_tpl_struct `BOOST_FUSION_ADAPT_TPL_STRUCT`]]
[def __adapt_struct_named__ [link fusion.adapted.adapt_struct_named `BOOST_FUSION_ADAPT_STRUCT_NAMED`]]
[def __adapt_struct_named_ns__ [link fusion.adapted.adapt_struct_named `BOOST_FUSION_ADAPT_STRUCT_NAMED_NS`]]
[def __adapt_assoc_tpl_struct__ [link fusion.adapted.adapt_assoc_tpl_struct `BOOST_FUSION_ADAPT_ASSOC_TPL_STRUCT`]]
[def __adapt_assoc_struct_named__ [link fusion.adapted.adapt_assoc_struct_named `BOOST_FUSION_ADAPT_ASSOC_STRUCT_NAMED`]]
[def __adapt_assoc_struct_named_ns__ [link fusion.adapted.adapt_assoc_struct_named `BOOST_FUSION_ADAPT_ASSOC_STRUCT_NAMED_NS`]]
[def __adapt_adt__ [link fusion.adapted.adapt_adt `BOOST_FUSION_ADAPT_ADT`]]
[def __adapt_tpl_adt__ [link fusion.adapted.adapt_tpl_adt `BOOST_FUSION_ADAPT_TPL_ADT`]]
[def __adapt_assoc_adt__ [link fusion.adapted.adapt_assoc_adt `BOOST_FUSION_ADAPT_ASSOC_ADT`]]
[def __adapt_assoc_tpl_adt__ [link fusion.adapted.adapt_assoc_tpl_adt `BOOST_FUSION_ADAPT_ASSOC_TPL_ADT`]]
[def __define_struct__ [link fusion.adapted.define_struct `BOOST_FUSION_DEFINE_STRUCT`]]
[def __define_tpl_struct__ [link fusion.adapted.define_tpl_struct `BOOST_FUSION_DEFINE_TPL_STRUCT`]]
[def __define_assoc_struct__ [link fusion.adapted.define_assoc_struct `BOOST_FUSION_DEFINE_ASSOC_STRUCT`]]
[def __define_assoc_tpl_struct__ [link fusion.adapted.define_assoc_tpl_struct `BOOST_FUSION_DEFINE_ASSOC_TPL_STRUCT`]]
[def __std_pair__ [link fusion.sequences.adapted.std__pair `std::pair`]]
[def __boost_array__ [link fusion.sequences.adapted.boost__array `boost::array`]]
[def __mpl_sequence__ [link fusion.sequences.adapted.mpl_sequence mpl sequence]]
[def __intrinsic__ [link fusion.sequence.intrinsic Intrinsic]]
[def __intrinsics__ [link fusion.sequence.intrinsic Intrinsics]]
[def __begin__ [link fusion.sequence.intrinsic.functions.begin `begin`]]
[def __result_of_begin__ [link fusion.sequence.intrinsic.metafunctions.begin `result_of::begin`]]
[def __end__ [link fusion.sequence.intrinsic.functions.end `end`]]
[def __result_of_end__ [link fusion.sequence.intrinsic.metafunctions.end `result_of::end`]]
[def __size__ [link fusion.sequence.intrinsic.functions.size `size`]]
[def __result_of_size__ [link fusion.sequence.intrinsic.metafunctions.size `result_of::size`]]
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[def __result_of_empty__ [link fusion.sequence.intrinsic.metafunctions.empty `result_of::empty`]]
[def __front__ [link fusion.sequence.intrinsic.functions.front `front`]]
[def __result_of_front__ [link fusion.sequence.intrinsic.metafunctions.front `result_of::front`]]
[def __back__ [link fusion.sequence.intrinsic.functions.back `back`]]
[def __result_of_back__ [link fusion.sequence.intrinsic.metafunctions.back `result_of::back`]]
[def __at__ [link fusion.sequence.intrinsic.functions.at `at`]]
[def __result_of_at__ [link fusion.sequence.intrinsic.metafunctions.at `result_of::at`]]
[def __at_c__ [link fusion.sequence.intrinsic.functions.at_c `at_c`]]
[def __result_of_at_c__ [link fusion.sequence.intrinsic.metafunctions.at_c `result_of::at_c`]]
[def __at_key__ [link fusion.sequence.intrinsic.functions.at_key `at_key`]]
[def __result_of_at_key__ [link fusion.sequence.intrinsic.metafunctions.at_key `result_of::at_key`]]
[def __has_key__ [link fusion.sequence.intrinsic.functions.has_key `has_key`]]
[def __result_of_has_key__ [link fusion.sequence.intrinsic.metafunctions.has_key `result_of::has_key`]]
[def __result_of_value_at__ [link fusion.sequence.intrinsic.metafunctions.value_at `result_of::value_at`]]
[def __result_of_value_at_c__ [link fusion.sequence.intrinsic.metafunctions.value_at_c `result_of::value_at_c`]]
[def __result_of_value_at_key__ [link fusion.sequence.intrinsic.metafunctions.value_at_key `result_of::value_at_key`]]
[def __intrinsic__ [link fusion.sequences.intrinsics Intrinsic]]
[def __intrinsics__ [link fusion.sequences.intrinsics Intrinsics]]
[def __begin__ [link fusion.sequences.intrinsics.functions.begin `begin`]]
[def __result_of_begin__ [link fusion.sequences.intrinsics.metafunctions.begin `result_of::begin`]]
[def __end__ [link fusion.sequences.intrinsics.functions.end `end`]]
[def __result_of_end__ [link fusion.sequences.intrinsics.metafunctions.end `result_of::end`]]
[def __size__ [link fusion.sequences.intrinsics.functions.size `size`]]
[def __result_of_size__ [link fusion.sequences.intrinsics.metafunctions.size `result_of::size`]]
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[def __front__ [link fusion.sequences.intrinsics.functions.front `front`]]
[def __result_of_front__ [link fusion.sequences.intrinsics.metafunctions.front `result_of::front`]]
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[def __result_of_back__ [link fusion.sequences.intrinsics.metafunctions.back `result_of::back`]]
[def __at__ [link fusion.sequences.intrinsics.functions.at `at`]]
[def __result_of_at__ [link fusion.sequences.intrinsics.metafunctions.at `result_of::at`]]
[def __at_c__ [link fusion.sequences.intrinsics.functions.at_c `at_c`]]
[def __result_of_at_c__ [link fusion.sequences.intrinsics.metafunctions.at_c `result_of::at_c`]]
[def __at_key__ [link fusion.sequences.intrinsics.functions.at_key `at_key`]]
[def __result_of_at_key__ [link fusion.sequences.intrinsics.metafunctions.at_key `result_of::at_key`]]
[def __has_key__ [link fusion.sequences.intrinsics.functions.has_key `has_key`]]
[def __result_of_has_key__ [link fusion.sequences.intrinsics.metafunctions.has_key `result_of::has_key`]]
[def __value_at_key__ [link fusion.sequences.intrinsics.metafunctions.value_at_key `value_at_key`]]
[def __result_of_value_at__ [link fusion.sequences.intrinsics.metafunctions.value_at `result_of::value_at`]]
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[def __result_of_value_at_key__ [link fusion.sequences.intrinsics.metafunctions.value_at_key `result_of::value_at_key`]]
[def __conversion__ [link fusion.container.conversion.functions Conversion]]
[def __result_of_conversion__ [link fusion.container.conversion.metafunctions Conversion Metafunctions]]
[def __as_vector__ [link fusion.container.conversion.functions.as_vector `as_vector`]]
[def __result_of_as_vector__ [link fusion.container.conversion.metafunctions.as_vector `result_of::as_vector`]]
[def __as_list__ [link fusion.container.conversion.functions.as_list `as_list`]]
[def __result_of_as_list__ [link fusion.container.conversion.metafunctions.as_list `result_of::as_list`]]
[def __as_set__ [link fusion.container.conversion.functions.as_set `as_set`]]
[def __result_of_as_set__ [link fusion.container.conversion.metafunctions.as_set `result_of::as_set`]]
[def __as_map__ [link fusion.container.conversion.functions.as_map `as_map`]]
[def __result_of_as_map__ [link fusion.container.conversion.metafunctions.as_map `result_of::as_map`]]
[def __conversion__ [link fusion.sequences.conversion.functions Conversion]]
[def __result_of_conversion__ [link fusion.sequences.conversion.metafunctions Conversion Metafunctions]]
[def __as_vector__ [link fusion.sequences.conversion.functions.as_vector `as_vector`]]
[def __result_of_as_vector__ [link fusion.sequences.conversion.metafunctions.as_vector `result_of::as_vector`]]
[def __as_list__ [link fusion.sequences.conversion.functions.as_list `as_list`]]
[def __result_of_as_list__ [link fusion.sequences.conversion.metafunctions.as_list `result_of::as_list`]]
[def __as_set__ [link fusion.sequences.conversion.functions.as_set `as_set`]]
[def __result_of_as_set__ [link fusion.sequences.conversion.metafunctions.as_set `result_of::as_set`]]
[def __as_map__ [link fusion.sequences.conversion.functions.as_map `as_map`]]
[def __result_of_as_map__ [link fusion.sequences.conversion.metafunctions.as_map `result_of::as_map`]]
[def __generation__ [link fusion.container.generation.functions Generation]]
[def __result_of_generation__ [link fusion.container.generation.metafunctions Generation Metafunctions]]
[def __make_vector__ [link fusion.container.generation.functions.make_vector `make_vector`]]
[def __result_of_make_vector__ [link fusion.container.generation.metafunctions.make_vector `result_of::make_vector`]]
[def __vector_tie__ [link fusion.container.generation.functions.vector_tie `vector_tie`]]
[def __map_tie__ [link fusion.container.generation.functions.vector_tie `map_tie`]]
[def __result_of_vector_tie__ [link fusion.container.generation.metafunctions.vector_tie `result_of::vector_tie`]]
[def __make_vector__ [link fusion.container.generation.functions.make_vector `make_vector`]]
[def __result_of_make_vector__ [link fusion.container.generation.metafunctions.make_vector `result_of::make_vector`]]
[def __make_cons__ [link fusion.container.generation.functions.make_cons `make_cons`]]
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[def __make_list__ [link fusion.container.generation.functions.make_list `make_list`]]
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[def __make_set__ [link fusion.container.generation.functions.make_set `make_set`]]
[def __result_of_make_set__ [link fusion.container.generation.metafunctions.make_set `result_of::make_set`]]
[def __make_map__ [link fusion.container.generation.functions.make_map `make_map`]]
[def __result_of_make_map__ [link fusion.container.generation.metafunctions.make_map `result_of::make_map`]]
[def __list_tie__ [link fusion.container.generation.functions.list_tie `list_tie`]]
[def __result_of_list_tie__ [link fusion.container.generation.metafunctions.list_tie `result_of::list_tie`]]
[def __generation__ [link fusion.sequences.generation.functions Generation]]
[def __result_of_generation__ [link fusion.sequences.generation.metafunctions Generation Metafunctions]]
[def __make_vector__ [link fusion.sequences.generation.functions.make_vector `make_vector`]]
[def __result_of_make_vector__ [link fusion.sequences.generation.metafunctions.make_vector `result_of::make_vector`]]
[def __vector_tie__ [link fusion.sequences.generation.functions.vector_tie `vector_tie`]]
[def __map_tie__ [link fusion.sequences.generation.functions.vector_tie `map_tie`]]
[def __result_of_vector_tie__ [link fusion.sequences.generation.metafunctions.vector_tie `result_of::vector_tie`]]
[def __make_vector__ [link fusion.sequences.generation.functions.make_vector `make_vector`]]
[def __result_of_make_vector__ [link fusion.sequences.generation.metafunctions.make_vector `result_of::make_vector`]]
[def __make_cons__ [link fusion.sequences.generation.functions.make_cons `make_cons`]]
[def __result_of_make_cons__ [link fusion.sequences.generation.metafunctions.make_cons `result_of::make_cons`]]
[def __make_list__ [link fusion.sequences.generation.functions.make_list `make_list`]]
[def __result_of_make_list__ [link fusion.sequences.generation.metafunctions.make_list `result_of::make_list`]]
[def __make_set__ [link fusion.sequences.generation.functions.make_set `make_set`]]
[def __result_of_make_set__ [link fusion.sequences.generation.metafunctions.make_set `result_of::make_set`]]
[def __make_map__ [link fusion.sequences.generation.functions.make_map `make_map`]]
[def __result_of_make_map__ [link fusion.sequences.generation.metafunctions.make_map `result_of::make_map`]]
[def __list_tie__ [link fusion.sequences.generation.functions.list_tie `list_tie`]]
[def __result_of_list_tie__ [link fusion.sequences.generation.metafunctions.list_tie `result_of::list_tie`]]
[def __out__ [link fusion.sequence.operator.i_o.out out]]
[def __in__ [link fusion.sequence.operator.i_o.in in]]
[def __eq__ [link fusion.sequence.operator.comparison.equal equal]]
[def __neq__ [link fusion.sequence.operator.comparison.not_equal not equal]]
[def __lt__ [link fusion.sequence.operator.comparison.less_than less than]]
[def __lte__ [link fusion.sequence.operator.comparison.less_than_equal less than equal]]
[def __gt__ [link fusion.sequence.operator.comparison.greater_than greater than]]
[def __gte__ [link fusion.sequence.operator.comparison.greater_than_equal greater than equal]]
[def __out__ [link fusion.sequences.operators.i_o.out out]]
[def __in__ [link fusion.sequences.operators.i_o.in in]]
[def __eq__ [link fusion.sequences.operators.comparison.equal equal]]
[def __neq__ [link fusion.sequences.operators.comparison.not_equal not equal]]
[def __lt__ [link fusion.sequences.operators.comparison.less_than less than]]
[def __lte__ [link fusion.sequences.operators.comparison.less_than_equal less than equal]]
[def __gt__ [link fusion.sequences.operators.comparison.greater_than greater than]]
[def __gte__ [link fusion.sequences.operators.comparison.greater_than_equal greater than equal]]
[def __algorithm__ [link fusion.algorithm Algorithm]]
[def __algorithms__ [link fusion.algorithm Algorithms]]
[def __copy__ [link fusion.algorithm.auxiliary.functions.copy `copy`]]
[def __fold__ [link fusion.algorithm.iteration.functions.fold `fold`]]
[def __result_of_fold__ [link fusion.algorithm.iteration.metafunctions.fold `result_of::fold`]]
[def __reverse_fold__ [link fusion.algorithm.iteration.functions.reverse_fold `reverse_fold`]]
[def __result_of_reverse_fold__ [link fusion.algorithm.iteration.metafunctions.reverse_fold `result_of::reverse_fold`]]
[def __iter_fold__ [link fusion.algorithm.iteration.functions.iter_fold `iter_fold`]]
[def __result_of_iter_fold__ [link fusion.algorithm.iteration.metafunctions.iter_fold `result_of::iter_fold`]]
[def __reverse_iter_fold__ [link fusion.algorithm.iteration.functions.reverse_iter_fold `reverse_iter_fold`]]
[def __result_of_reverse_iter_fold__ [link fusion.algorithm.iteration.metafunctions.reverse_iter_fold `result_of::reverse_iter_fold`]]
[def __accumulate__ [link fusion.algorithm.iteration.functions.accumulate `accumulate`]]
[def __result_of_accumulate__ [link fusion.algorithm.iteration.metafunctions.accumulate `result_of::accumulate`]]
[def __for_each__ [link fusion.algorithm.iteration.functions.for_each `for_each`]]
[def __result_of_for_each__ [link fusion.algorithm.iteration.metafunctions.for_each `result_of::for_each`]]
[def __any__ [link fusion.algorithm.query.functions.any `any`]]
[def __result_of_any__ [link fusion.algorithm.query.metafunctions.any `result_of::any`]]
[def __all__ [link fusion.algorithm.query.functions.all `all`]]
[def __result_of_all__ [link fusion.algorithm.query.metafunctions.all `result_of::all`]]
[def __none__ [link fusion.algorithm.query.functions.none `none`]]
[def __result_of_none__ [link fusion.algorithm.query.metafunctions.none `result_of::none`]]
[def __find__ [link fusion.algorithm.query.functions.find `find`]]
[def __result_of_find__ [link fusion.algorithm.query.metafunctions.find `result_of::find`]]
[def __find_if__ [link fusion.algorithm.query.functions.find_if `find_if`]]
[def __result_of_find_if__ [link fusion.algorithm.query.metafunctions.find_if `result_of::find_if`]]
[def __count__ [link fusion.algorithm.query.functions.count `count`]]
[def __result_of_count__ [link fusion.algorithm.query.metafunctions.count `result_of::count`]]
[def __count_if__ [link fusion.algorithm.query.functions.count_if `count_if`]]
[def __result_of_count_if__ [link fusion.algorithm.query.metafunctions.count_if `result_of::count_if`]]
[def __filter__ [link fusion.algorithm.transformation.functions.filter `filter`]]
[def __result_of_filter__ [link fusion.algorithm.transformation.metafunctions.filter `result_of::filter`]]
[def __filter_if__ [link fusion.algorithm.transformation.functions.filter_if `filter_if`]]
[def __result_of_filter_if__ [link fusion.algorithm.transformation.metafunctions.filter_if `result_of::filter_if`]]
[def __transform__ [link fusion.algorithm.transformation.functions.transform `transform`]]
[def __result_of_transform__ [link fusion.algorithm.transformation.metafunctions.transform `result_of::transform`]]
[def __replace__ [link fusion.algorithm.transformation.functions.replace `replace`]]
[def __result_of_replace__ [link fusion.algorithm.transformation.metafunctions.replace `result_of::replace`]]
[def __replace_if__ [link fusion.algorithm.transformation.functions.replace_if `replace_if`]]
[def __result_of_replace_if__ [link fusion.algorithm.transformation.metafunctions.replace_if `result_of::replace_if`]]
[def __remove__ [link fusion.algorithm.transformation.functions.remove `remove`]]
[def __result_of_remove__ [link fusion.algorithm.transformation.metafunctions.remove `result_of::remove`]]
[def __remove_if__ [link fusion.algorithm.transformation.functions.remove_if `remove_if`]]
[def __result_of_remove_if__ [link fusion.algorithm.transformation.metafunctions.remove_if `result_of::remove_if`]]
[def __reverse__ [link fusion.algorithm.transformation.functions.reverse `reverse`]]
[def __result_of_reverse__ [link fusion.algorithm.transformation.metafunctions.reverse `result_of::reverse`]]
[def __clear__ [link fusion.algorithm.transformation.functions.clear `clear`]]
[def __result_of_clear__ [link fusion.algorithm.transformation.metafunctions.clear `result_of::clear`]]
[def __erase__ [link fusion.algorithm.transformation.functions.erase `erase`]]
[def __result_of_erase__ [link fusion.algorithm.transformation.metafunctions.erase `result_of::erase`]]
[def __erase_key__ [link fusion.algorithm.transformation.functions.erase_key `erase_key`]]
[def __result_of_erase_key__ [link fusion.algorithm.transformation.metafunctions.erase_key `result_of::erase_key`]]
[def __insert__ [link fusion.algorithm.transformation.functions.insert `insert`]]
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@ -293,7 +257,9 @@
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[def __invoke__ [link fusion.functional.invocation.functions.invoke `invoke`]]
[def __invoke_procedure__ [link fusion.functional.invocation.functions.invoke_proc `invoke_procedure`]]
@ -301,14 +267,18 @@
[def __make_fused__ [link fusion.functional.generation.functions.mk_fused `make_fused`]]
[def __make_fused_procedure__ [link fusion.functional.generation.functions.mk_fused_proc `make_fused_procedure`]]
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[def __make_unfused_lvalue_args__ [link fusion.functional.generation.functions.mk_unfused_lvargs `make_unfused_lvalue_args`]]
[def __result_of_invoke__ [link fusion.functional.invocation.metafunctions.invoke `result_of::invoke`]]
[def __result_of_invoke_procedure__ [link fusion.functional.invocation.metafunctions.invoke_proc `result_of::invoke_procedure`]]
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[def __result_of_make_fused__ [link fusion.functional.generation.metafunctions.mk_fused `make_fused`]]
[def __result_of_make_fused_procedure__ [link fusion.functional.generation.metafunctions.mk_fused_proc `make_fused_procedure`]]
[def __result_of_make_fused_function_object__ [link fusion.functional.generation.metafunctions.mk_fused_fobj `make_fused_function_object`]]
[def __result_of_make_unfused__ [link fusion.functional.generation.metafunctions.mk_unfused `make_unfused`]]
[def __result_of_make_unfused_generic__ [link fusion.functional.generation.metafunctions.mk_unfused_genrc `make_unfused_generic`]]
[def __result_of_make_unfused_rvalue_args__ [link fusion.functional.generation.metafunctions.mk_unfused_rvargs `make_unfused_rvalue_args`]]
[def __result_of_make_unfused_lvalue_args__ [link fusion.functional.generation.metafunctions.mk_unfused_lvargs `make_unfused_lvalue_args`]]
[def __recursive_inline__ [link fusion.notes.recursive_inlined_functions Recursive Inlined Functions]]
[def __overloaded_functions__ [link fusion.notes.overloaded_functions Overloaded Functions]]
@ -318,25 +288,18 @@
[def __note_boost_ref__ [link fusion.notes.boost__ref `boost::ref`]]
[def __quick_start__ [link fusion.quick_start Quick Start]]
[def __organization__ [link fusion.organization Organization]]
[def __organization__ [link fusion.organization Orgainization]]
[def __extension__ [link fusion.extension Extension]]
[def __sequence_facade__ [link fusion.extension.sequence_facade `sequence_facade`]]
[def __iterator_facade__ [link fusion.extension.iterator_facade `iterator_facade`]]
[def __adt_attribute_proxy__ [link fusion.notes.adt_attribute_proxy `adt_attribute_proxy`]]
[include preface.qbk]
[include introduction.qbk]
[include quick_start.qbk]
[include organization.qbk]
[include support.qbk]
[include iterator.qbk]
[include sequence.qbk]
[include container.qbk]
[include view.qbk]
[include adapted.qbk]
[include algorithm.qbk]
[include tuple.qbk]
[include iterators.qbk]
[include sequences.qbk]
[include algorithms.qbk]
[include tuples.qbk]
[include extension.qbk]
[include functional.qbk]
[include notes.qbk]

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<p>
Special thanks to David Abrahams, Douglas Gregor, Hartmut Kaiser, Aleksey Gurtovoy,
Peder Holt, Daniel Wallin, Jaakko Jarvi, Jeremiah Willcock, Dan Marsden, Eric
Niebler, Joao Abecasis and Andy Little. These people are instrumental in the
design and development of Fusion.
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<p>
Special thanks to Ronald Garcia, the review manager and to all the people in
the boost community who participated in the review: Andreas Pokorny, Andreas
Huber, Jeff Flinn, David Abrahams, Pedro Lamarao, Larry Evans, Ryan Gallagher,
Andy Little, Gennadiy Rozental, Tobias Schwinger, Joao Abecasis, Eric Niebler,
Oleg Abrosimov, Gary Powell, Eric Friedman, Darren Cook, Martin Bonner and
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<dt><span class="section"><a href="algorithms/iteration.html">Iteration</a></span></dt>
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<a name="fusion.algorithms.lazy_evaluation"></a><h3>
<a name="id572828"></a>
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</h3>
<p>
Unlike <a href="http://www.boost.org/libs/mpl/index.html" target="_top">MPL</a>, Fusion
algorithms are lazy and non sequence-type preserving. What does that mean?
It means that when you operate on a sequence through a Fusion algorithm that
returns a sequence, the sequence returned may not be of the same class as the
original. This is by design. Runtime efficiency is given a high priority. Like
<a href="http://www.boost.org/libs/mpl/index.html" target="_top">MPL</a>, and unlike
<a href="http://en.wikipedia.org/wiki/Standard_Template_Library" target="_top">STL</a>,
fusion algorithms are functional in nature such that algorithms are non mutating
(no side effects). However, due to the high cost of returning full sequences
such as vectors and lists, <span class="emphasis"><em>Views</em></span> are returned from Fusion
algorithms instead. For example, the <a href="algorithms/transformation/functions/transform.html" title="transform"><tt class="computeroutput"><span class="identifier">transform</span></tt></a> algorithm does not actually
return a transformed version of the original sequence. <a href="algorithms/transformation/functions/transform.html" title="transform"><tt class="computeroutput"><span class="identifier">transform</span></tt></a> returns a <a href="sequences/views/transform_view.html" title="transform_view"><tt class="computeroutput"><span class="identifier">transform_view</span></tt></a>. This view holds a
reference to the original sequence plus the transform function. Iteration over
the <a href="sequences/views/transform_view.html" title="transform_view"><tt class="computeroutput"><span class="identifier">transform_view</span></tt></a>
will apply the transform function over the sequence elements on demand. This
<span class="emphasis"><em>lazy</em></span> evaluation scheme allows us to chain as many algorithms
as we want without incurring a high runtime penalty.
</p>
<a name="fusion.algorithms.sequence_extension"></a><h3>
<a name="id572975"></a>
<a href="algorithms.html#fusion.algorithms.sequence_extension">Sequence Extension</a>
</h3>
<p>
The <span class="emphasis"><em>lazy</em></span> evaluation scheme where <a href="algorithms.html" title="Algorithms">Algorithms</a>
return <a href="sequences/views.html" title="Views">Views</a> also allows operations
such as <a href="algorithms/transformation/functions/push_back.html" title="push_back"><tt class="computeroutput"><span class="identifier">push_back</span></tt></a> to be totally generic. In
Fusion, <a href="algorithms/transformation/functions/push_back.html" title="push_back"><tt class="computeroutput"><span class="identifier">push_back</span></tt></a> is actually a generic algorithm
that works on all sequences. Given an input sequence <tt class="computeroutput"><span class="identifier">s</span></tt>
and a value <tt class="computeroutput"><span class="identifier">x</span></tt>, Fusion's <a href="algorithms/transformation/functions/push_back.html" title="push_back"><tt class="computeroutput"><span class="identifier">push_back</span></tt></a> algorithm simply returns
a <a href="sequences/views/joint_view.html" title="joint_view"><tt class="computeroutput"><span class="identifier">joint_view</span></tt></a>:
a view that holds a reference to the original sequence <tt class="computeroutput"><span class="identifier">s</span></tt>
and the value <tt class="computeroutput"><span class="identifier">x</span></tt>. Functions
that were once sequence specific and need to be implemented N times over N
different sequences are now implemented only once. That is to say that Fusion
sequences are cheaply extensible. However, an important caveat is that the
result of a sequence extending operation like <a href="algorithms/transformation/functions/push_back.html" title="push_back"><tt class="computeroutput"><span class="identifier">push_back</span></tt></a> does not retain the properties
of the original sequence such as associativity of <span class="underline">_set</span>_s.
To regain the original sequence, <a href="sequences/conversion/functions.html" title="Functions">Conversion</a>
functions are provided. You may use one of the <a href="sequences/conversion/functions.html" title="Functions">Conversion</a>
functions to convert back to the original sequence type.
</p>
<a name="fusion.algorithms.header"></a><h3>
<a name="id573200"></a>
<a href="algorithms.html#fusion.algorithms.header">Header</a>
</h3>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
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<a name="fusion.algorithms.concepts.poly.description"></a><h5>
<a name="id553170"></a>
<a href="poly.html#fusion.algorithms.concepts.poly.description">Description</a>
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<p>
A type of function object with a nested metafunction <tt class="computeroutput"><span class="identifier">result</span></tt>.
<tt class="computeroutput"><span class="identifier">result</span></tt> returns the result
type of calling the function object, given the argument types.
</p>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">F</span></tt></span></dt>
<dd>
A Polymorphic Function Object type
</dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">f</span></tt></span></dt>
<dd>
A Polymorphic Function Object
</dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">T1</span>
<span class="special">...</span><span class="identifier">TN</span></tt></span></dt>
<dd>
Arbitrary types
</dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">t1</span>
<span class="special">...</span><span class="identifier">tN</span></tt></span></dt>
<dd>
Objects with types <tt class="computeroutput"><span class="identifier">T1</span> <span class="special">...</span><span class="identifier">TN</span></tt>
</dd>
</dl>
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<a name="fusion.algorithms.concepts.poly.expression_requirements"></a><h5>
<a name="id553345"></a>
<a href="poly.html#fusion.algorithms.concepts.poly.expression_requirements">Expression
requirements</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>Expression</th>
<th>Return Type</th>
<th>Runtime
Complexity</th>
</tr></thead>
<tbody><tr>
<td><tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">t1</span><span class="special">,</span> <span class="special">...</span><span class="identifier">tN</span><span class="special">)</span></tt></td>
<td><tt class="computeroutput"><span class="identifier">F</span><span class="special">::</span><span class="identifier">result</span><span class="special">&lt;</span><span class="identifier">T1</span><span class="special">,</span> <span class="special">...</span><span class="identifier">TN</span><span class="special">&gt;::</span><span class="identifier">type</span></tt></td>
<td>Unspecified</td>
</tr></tbody>
</table></div>
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<a name="fusion.algorithms.iteration"></a><a href="iteration.html" title="Iteration">Iteration</a></h3></div></div></div>
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<p>
The iteration algorithms provide the fundamental algorithms for traversing
a sequence repeatedly applying an operation to its elements.
</p>
<a name="fusion.algorithms.iteration.header"></a><h4>
<a name="id573309"></a>
<a href="iteration.html#fusion.algorithms.iteration.header">Header</a>
</h4>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">iteration</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
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<a href="accumulate.html#fusion.algorithms.iteration.functions.accumulate.description">Description</a>
</h6>
<p>
For a sequence <tt class="computeroutput"><span class="identifier">Seq</span></tt>, initial
state, and binary function object or function pointer <tt class="computeroutput"><span class="identifier">f</span></tt>,
accumulate repeatedly applies binary <tt class="computeroutput"><span class="identifier">f</span></tt>
to each element of <tt class="computeroutput"><span class="identifier">Seq</span></tt>
and the previous state.
</p>
<a name="fusion.algorithms.iteration.functions.accumulate.synopsis"></a><h6>
<a name="id575193"></a>
<a href="accumulate.html#fusion.algorithms.iteration.functions.accumulate.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">State</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/accumulate.html" title="accumulate"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">accumulate</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">State</span><span class="special">,</span> <span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">accumulate</span><span class="special">(</span>
<span class="identifier">Sequence</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">State</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">initial_state</span><span class="special">,</span> <span class="identifier">F</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id575454"></a><p class="title"><b>Table<EFBFBD>1.34.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>, <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">eN</span>
<span class="special">....</span><span class="identifier">f</span><span class="special">(</span><span class="identifier">e2</span><span class="special">,</span><span class="identifier">f</span><span class="special">(</span><span class="identifier">e1</span><span class="special">,</span><span class="identifier">initial_state</span><span class="special">)))</span></tt> must be a valid expression for
each element <tt class="computeroutput"><span class="identifier">e1</span></tt>
to <tt class="computeroutput"><span class="identifier">eN</span></tt> in <tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">initial_state</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
Initial state
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span></tt>
</p>
</td>
<td>
<p>
<tt class="computeroutput"><a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top"><tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">result_of</span></tt></a><span class="special">&lt;</span><span class="identifier">F</span><span class="special">(</span><span class="identifier">E</span><span class="special">,</span><span class="identifier">S</span><span class="special">)&gt;::</span><span class="identifier">type</span></tt> is the return type of <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">,</span><span class="identifier">s</span><span class="special">)</span></tt>
for each element <tt class="computeroutput"><span class="identifier">e</span></tt>
of type <tt class="computeroutput"><span class="identifier">E</span></tt> in <tt class="computeroutput"><span class="identifier">seq</span></tt>, and current state <tt class="computeroutput"><span class="identifier">s</span></tt> of type <tt class="computeroutput"><span class="identifier">S</span></tt>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.iteration.functions.accumulate.expression_semantics"></a><h6>
<a name="id575906"></a>
<a href="accumulate.html#fusion.algorithms.iteration.functions.accumulate.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<span class="identifier">accumulate</span><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">initial_state</span><span class="special">,</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: Any type
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Equivalent to <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">eN</span> <span class="special">....</span><span class="identifier">f</span><span class="special">(</span><span class="identifier">e2</span><span class="special">,</span><span class="identifier">f</span><span class="special">(</span><span class="identifier">e1</span><span class="special">,</span><span class="identifier">initial_state</span><span class="special">)))</span></tt>
where <tt class="computeroutput"><span class="identifier">e1</span> <span class="special">...</span><span class="identifier">eN</span></tt> are the elements of <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithms.iteration.functions.accumulate.complexity"></a><h6>
<a name="id576116"></a>
<a href="accumulate.html#fusion.algorithms.iteration.functions.accumulate.complexity">Complexity</a>
</h6>
<p>
Linear, exactly <tt class="computeroutput"><a href="../../../sequences/intrinsics/metafunctions/size.html" title="size"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">value</span></tt> applications of <tt class="computeroutput"><span class="identifier">f</span></tt>.
</p>
<a name="fusion.algorithms.iteration.functions.accumulate.header"></a><h6>
<a name="id576212"></a>
<a href="accumulate.html#fusion.algorithms.iteration.functions.accumulate.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">iteration</span><span class="special">/</span><span class="identifier">accumulate</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.iteration.functions.accumulate.example"></a><h6>
<a name="id576320"></a>
<a href="accumulate.html#fusion.algorithms.iteration.functions.accumulate.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">struct</span> <span class="identifier">make_string</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">result_type</span><span class="special">;</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="keyword">operator</span><span class="special">()(</span><span class="keyword">const</span> <span class="identifier">T</span><span class="special">&amp;</span> <span class="identifier">t</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">&amp;</span> <span class="identifier">str</span><span class="special">)</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">str</span> <span class="special">+</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">lexical_cast</span><span class="special">&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">&gt;(</span><span class="identifier">t</span><span class="special">);</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="special">...</span>
<span class="keyword">const</span> <a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="identifier">vec</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><a href="accumulate.html" title="accumulate"><tt class="computeroutput"><span class="identifier">accumulate</span></tt></a><span class="special">(</span><span class="identifier">vec</span><span class="special">,</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">(</span><span class="string">""</span><span class="special">),</span> <span class="identifier">make_string</span><span class="special">())</span> <span class="special">==</span> <span class="string">"12"</span><span class="special">);</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="fold.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="for_each.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.iteration.functions.fold"></a><a href="fold.html" title="fold">fold</a></h5></div></div></div>
<a name="fusion.algorithms.iteration.functions.fold.description"></a><h6>
<a name="id573446"></a>
<a href="fold.html#fusion.algorithms.iteration.functions.fold.description">Description</a>
</h6>
<p>
For a sequence <tt class="computeroutput"><span class="identifier">Seq</span></tt>, initial
state, and binary function object or function pointer <tt class="computeroutput"><span class="identifier">f</span></tt>,
fold repeatedly applies binary <tt class="computeroutput"><span class="identifier">f</span></tt>
to each element of <tt class="computeroutput"><span class="identifier">Seq</span></tt>
and the previous state.
</p>
<a name="fusion.algorithms.iteration.functions.fold.synopsis"></a><h6>
<a name="id573525"></a>
<a href="fold.html#fusion.algorithms.iteration.functions.fold.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">State</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/fold.html" title="fold"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">fold</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">State</span><span class="special">,</span> <span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">fold</span><span class="special">(</span>
<span class="identifier">Sequence</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">State</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">initial_state</span><span class="special">,</span> <span class="identifier">F</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id573784"></a><p class="title"><b>Table<EFBFBD>1.33.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>,<tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">,</span><span class="identifier">s</span><span class="special">)</span></tt> must be a valid expression for
each element <tt class="computeroutput"><span class="identifier">e</span></tt>
in <tt class="computeroutput"><span class="identifier">seq</span></tt>, and current
state <tt class="computeroutput"><span class="identifier">s</span></tt>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">initial_state</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
Initial state
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span></tt>
</p>
</td>
<td>
<p>
<tt class="computeroutput"><a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top"><tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">result_of</span></tt></a><span class="special">&lt;</span><span class="identifier">F</span><span class="special">(</span><span class="identifier">E</span><span class="special">,</span><span class="identifier">S</span><span class="special">)&gt;::</span><span class="identifier">type</span></tt> is the return type of <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">,</span><span class="identifier">s</span><span class="special">)</span></tt>
for each element <tt class="computeroutput"><span class="identifier">e</span></tt>
of type <tt class="computeroutput"><span class="identifier">E</span></tt> in <tt class="computeroutput"><span class="identifier">seq</span></tt>, and current state <tt class="computeroutput"><span class="identifier">s</span></tt> of type <tt class="computeroutput"><span class="identifier">S</span></tt>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.iteration.functions.fold.expression_semantics"></a><h6>
<a name="id574194"></a>
<a href="fold.html#fusion.algorithms.iteration.functions.fold.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<span class="identifier">fold</span><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">initial_state</span><span class="special">,</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: Any type
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Equivalent to <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">eN</span> <span class="special">....</span><span class="identifier">f</span><span class="special">(</span><span class="identifier">e2</span><span class="special">,</span><span class="identifier">f</span><span class="special">(</span><span class="identifier">e1</span><span class="special">,</span><span class="identifier">initial_state</span><span class="special">)))</span></tt>
where <tt class="computeroutput"><span class="identifier">e1</span> <span class="special">...</span><span class="identifier">eN</span></tt> are the elements of <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithms.iteration.functions.fold.complexity"></a><h6>
<a name="id574404"></a>
<a href="fold.html#fusion.algorithms.iteration.functions.fold.complexity">Complexity</a>
</h6>
<p>
Linear, exactly <tt class="computeroutput"><a href="../../../sequences/intrinsics/metafunctions/size.html" title="size"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">value</span></tt> applications of <tt class="computeroutput"><span class="identifier">f</span></tt>.
</p>
<a name="fusion.algorithms.iteration.functions.fold.header"></a><h6>
<a name="id574499"></a>
<a href="fold.html#fusion.algorithms.iteration.functions.fold.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">iteration</span><span class="special">/</span><span class="identifier">fold</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.iteration.functions.fold.example"></a><h6>
<a name="id574606"></a>
<a href="fold.html#fusion.algorithms.iteration.functions.fold.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">struct</span> <span class="identifier">make_string</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">result_type</span><span class="special">;</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="keyword">operator</span><span class="special">()(</span><span class="keyword">const</span> <span class="identifier">T</span><span class="special">&amp;</span> <span class="identifier">t</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">&amp;</span> <span class="identifier">str</span><span class="special">)</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">str</span> <span class="special">+</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">lexical_cast</span><span class="special">&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">&gt;(</span><span class="identifier">t</span><span class="special">);</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="special">...</span>
<span class="keyword">const</span> <a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="identifier">vec</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><a href="fold.html" title="fold"><tt class="computeroutput"><span class="identifier">fold</span></tt></a><span class="special">(</span><span class="identifier">vec</span><span class="special">,</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">(</span><span class="string">""</span><span class="special">),</span> <span class="identifier">make_string</span><span class="special">())</span> <span class="special">==</span> <span class="string">"12"</span><span class="special">);</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="../functions.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="accumulate.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.iteration.functions.for_each"></a><a href="for_each.html" title="for_each">for_each</a></h5></div></div></div>
<a name="fusion.algorithms.iteration.functions.for_each.description"></a><h6>
<a name="id576823"></a>
<a href="for_each.html#fusion.algorithms.iteration.functions.for_each.description">Description</a>
</h6>
<p>
Applies a unary function object to each element of a sequence.
</p>
<a name="fusion.algorithms.iteration.functions.for_each.synopsis"></a><h6>
<a name="id576855"></a>
<a href="for_each.html#fusion.algorithms.iteration.functions.for_each.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/for_each.html" title="for_each"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">for_each</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">for_each</span><span class="special">(</span>
<span class="identifier">Sequence</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">F</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id577058"></a><p class="title"><b>Table<EFBFBD>1.35.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>, <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt> must be a valid expression for
each element <tt class="computeroutput"><span class="identifier">e</span></tt>
in <tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span></tt>
</p>
</td>
<td>
<p>
A unary <a href="../../../functional/concepts/reg_callable.html" title=" Regular Callable
Object">Regular
Callable Object</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.iteration.functions.for_each.expression_semantics"></a><h6>
<a name="id577258"></a>
<a href="for_each.html#fusion.algorithms.iteration.functions.for_each.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="for_each.html" title="for_each"><tt class="computeroutput"><span class="identifier">for_each</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: <tt class="computeroutput"><span class="keyword">void</span></tt>
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Calls <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt> for each element <tt class="computeroutput"><span class="identifier">e</span></tt>
in <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithms.iteration.functions.for_each.complexity"></a><h6>
<a name="id577417"></a>
<a href="for_each.html#fusion.algorithms.iteration.functions.for_each.complexity">Complexity</a>
</h6>
<p>
Linear, exactly <tt class="computeroutput"><a href="../../../sequences/intrinsics/metafunctions/size.html" title="size"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">value</span></tt> applications of <tt class="computeroutput"><span class="identifier">f</span></tt>.
</p>
<a name="fusion.algorithms.iteration.functions.for_each.header"></a><h6>
<a name="id577512"></a>
<a href="for_each.html#fusion.algorithms.iteration.functions.for_each.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">iteration</span><span class="special">/</span><span class="identifier">for_each</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.iteration.functions.for_each.example"></a><h6>
<a name="id577619"></a>
<a href="for_each.html#fusion.algorithms.iteration.functions.for_each.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">struct</span> <span class="identifier">increment</span>
<span class="special">{</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="keyword">void</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">T</span><span class="special">&amp;</span> <span class="identifier">t</span><span class="special">)</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="special">++</span><span class="identifier">t</span><span class="special">;</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="special">...</span>
<a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="identifier">vec</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">);</span>
<a href="for_each.html" title="for_each"><tt class="computeroutput"><span class="identifier">for_each</span></tt></a><span class="special">(</span><span class="identifier">vec</span><span class="special">,</span> <span class="identifier">increment</span><span class="special">());</span>
<span class="identifier">assert</span><span class="special">(</span><span class="identifier">vec</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">2</span><span class="special">,</span><span class="number">3</span><span class="special">));</span>
</pre>
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<a name="fusion.algorithms.iteration.metafunctions"></a><a href="metafunctions.html" title="Metafunctions">Metafunctions</a></h4></div></div></div>
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<dt><span class="section"><a href="metafunctions/fold.html">fold</a></span></dt>
<dt><span class="section"><a href="metafunctions/accumulate.html">accumulate</a></span></dt>
<dt><span class="section"><a href="metafunctions/for_each.html">for_each</a></span></dt>
</dl></div>
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<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.iteration.metafunctions.accumulate"></a><a href="accumulate.html" title="accumulate">accumulate</a></h5></div></div></div>
<a name="fusion.algorithms.iteration.metafunctions.accumulate.description"></a><h6>
<a name="id578935"></a>
<a href="accumulate.html#fusion.algorithms.iteration.metafunctions.accumulate.description">Description</a>
</h6>
<p>
Returns the result type of <a href="../functions/accumulate.html" title="accumulate"><tt class="computeroutput"><span class="identifier">accumulate</span></tt></a>.
</p>
<a name="fusion.algorithms.iteration.metafunctions.accumulate.synopsis"></a><h6>
<a name="id578985"></a>
<a href="accumulate.html#fusion.algorithms.iteration.metafunctions.accumulate.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">State</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">accumulate</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id579121"></a><p class="title"><b>Table<EFBFBD>1.37.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
The sequence to iterate
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">State</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
The initial state for the first application of <tt class="computeroutput"><span class="identifier">F</span></tt>
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">F</span></tt>
</p>
</td>
<td>
<p>
<tt class="computeroutput"><a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top"><tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">result_of</span></tt></a><span class="special">&lt;</span><span class="identifier">F</span><span class="special">(</span><span class="identifier">E</span><span class="special">,</span><span class="identifier">S</span><span class="special">)&gt;::</span><span class="identifier">type</span></tt> is the return type of <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">,</span><span class="identifier">s</span><span class="special">)</span></tt>
for each element <tt class="computeroutput"><span class="identifier">e</span></tt>
of type <tt class="computeroutput"><span class="identifier">E</span></tt> in <tt class="computeroutput"><span class="identifier">seq</span></tt>, and current state <tt class="computeroutput"><span class="identifier">s</span></tt> of type <tt class="computeroutput"><span class="identifier">S</span></tt>
</p>
</td>
<td>
<p>
The operation to be applied on forward traversal
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.iteration.metafunctions.accumulate.expression_semantics"></a><h6>
<a name="id579472"></a>
<a href="accumulate.html#fusion.algorithms.iteration.metafunctions.accumulate.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="accumulate.html" title="accumulate"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">accumulate</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">State</span><span class="special">,</span> <span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: Any type
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns the result of applying
<tt class="computeroutput"><span class="identifier">accumulate</span></tt> to a sequence
of type <tt class="computeroutput"><span class="identifier">Sequence</span></tt>, with
an initial state of type <tt class="computeroutput"><span class="identifier">State</span></tt>
and binary function object or function pointer of type <tt class="computeroutput"><span class="identifier">F</span></tt>.
</p>
<a name="fusion.algorithms.iteration.metafunctions.accumulate.complexity"></a><h6>
<a name="id579649"></a>
<a href="accumulate.html#fusion.algorithms.iteration.metafunctions.accumulate.complexity">Complexity</a>
</h6>
<p>
Linear, exactly <tt class="computeroutput"><a href="../../../sequences/intrinsics/metafunctions/size.html" title="size"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">value</span></tt> applications of <tt class="computeroutput"><span class="identifier">F</span></tt>.
</p>
<a name="fusion.algorithms.iteration.metafunctions.accumulate.header"></a><h6>
<a name="id579744"></a>
<a href="accumulate.html#fusion.algorithms.iteration.metafunctions.accumulate.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">iteration</span><span class="special">/</span><span class="identifier">accumulate</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
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<a name="fusion.algorithms.iteration.metafunctions.fold.description"></a><h6>
<a name="id578002"></a>
<a href="fold.html#fusion.algorithms.iteration.metafunctions.fold.description">Description</a>
</h6>
<p>
Returns the result type of <a href="../functions/fold.html" title="fold"><tt class="computeroutput"><span class="identifier">fold</span></tt></a>.
</p>
<a name="fusion.algorithms.iteration.metafunctions.fold.synopsis"></a><h6>
<a name="id578051"></a>
<a href="fold.html#fusion.algorithms.iteration.metafunctions.fold.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">State</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">fold</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id578187"></a><p class="title"><b>Table<EFBFBD>1.36.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
The sequence to iterate
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">State</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
The initial state for the first application of <tt class="computeroutput"><span class="identifier">F</span></tt>
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">F</span></tt>
</p>
</td>
<td>
<p>
<tt class="computeroutput"><a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top"><tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">result_of</span></tt></a><span class="special">&lt;</span><span class="identifier">F</span><span class="special">(</span><span class="identifier">E</span><span class="special">,</span><span class="identifier">S</span><span class="special">)&gt;::</span><span class="identifier">type</span></tt> is the return type of <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">,</span><span class="identifier">s</span><span class="special">)</span></tt>
for each element <tt class="computeroutput"><span class="identifier">e</span></tt>
of type <tt class="computeroutput"><span class="identifier">E</span></tt> in <tt class="computeroutput"><span class="identifier">seq</span></tt>, and current state <tt class="computeroutput"><span class="identifier">s</span></tt> of type <tt class="computeroutput"><span class="identifier">S</span></tt>
</p>
</td>
<td>
<p>
The operation to be applied on forward traversal
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.iteration.metafunctions.fold.expression_semantics"></a><h6>
<a name="id578537"></a>
<a href="fold.html#fusion.algorithms.iteration.metafunctions.fold.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="fold.html" title="fold"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">fold</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">State</span><span class="special">,</span> <span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: Any type
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns the result of applying
<tt class="computeroutput"><span class="identifier">fold</span></tt> to a sequence of
type <tt class="computeroutput"><span class="identifier">Sequence</span></tt>, with an
initial state of type <tt class="computeroutput"><span class="identifier">State</span></tt>
and binary function object or function pointer of type <tt class="computeroutput"><span class="identifier">F</span></tt>.
</p>
<a name="fusion.algorithms.iteration.metafunctions.fold.complexity"></a><h6>
<a name="id578711"></a>
<a href="fold.html#fusion.algorithms.iteration.metafunctions.fold.complexity">Complexity</a>
</h6>
<p>
Linear, exactly <tt class="computeroutput"><a href="../../../sequences/intrinsics/metafunctions/size.html" title="size"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">value</span></tt> applications of <tt class="computeroutput"><span class="identifier">F</span></tt>.
</p>
<a name="fusion.algorithms.iteration.metafunctions.fold.header"></a><h6>
<a name="id578806"></a>
<a href="fold.html#fusion.algorithms.iteration.metafunctions.fold.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">iteration</span><span class="special">/</span><span class="identifier">fold</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>for_each</title>
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.iteration.metafunctions.for_each"></a><a href="for_each.html" title="for_each">for_each</a></h5></div></div></div>
<p>
A metafunction returning the result type of applying <a href="../functions/for_each.html" title="for_each"><tt class="computeroutput"><span class="identifier">for_each</span></tt></a> to a sequence. The
return type of <a href="../functions/for_each.html" title="for_each"><tt class="computeroutput"><span class="identifier">for_each</span></tt></a> is always <tt class="computeroutput"><span class="keyword">void</span></tt>.
</p>
<a name="fusion.algorithms.iteration.metafunctions.for_each.description"></a><h6>
<a name="id579927"></a>
<a href="for_each.html#fusion.algorithms.iteration.metafunctions.for_each.description">Description</a>
</h6>
<a name="fusion.algorithms.iteration.metafunctions.for_each.synopsis"></a><h6>
<a name="id579954"></a>
<a href="for_each.html#fusion.algorithms.iteration.metafunctions.for_each.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">for_each</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">void</span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id580076"></a><p class="title"><b>Table<EFBFBD>1.38.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">F</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.iteration.metafunctions.for_each.expression_semantics"></a><h6>
<a name="id580217"></a>
<a href="for_each.html#fusion.algorithms.iteration.metafunctions.for_each.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="for_each.html" title="for_each"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">for_each</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: <tt class="computeroutput"><span class="keyword">void</span></tt>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns the return type of
<a href="../functions/for_each.html" title="for_each"><tt class="computeroutput"><span class="identifier">for_each</span></tt></a> for a sequence of type
<tt class="computeroutput"><span class="identifier">Sequence</span></tt> and a unary
function object <tt class="computeroutput"><span class="identifier">F</span></tt>. The
return type is always <tt class="computeroutput"><span class="keyword">void</span></tt>.
</p>
<a name="fusion.algorithms.iteration.metafunctions.for_each.complexity"></a><h6>
<a name="id580398"></a>
<a href="for_each.html#fusion.algorithms.iteration.metafunctions.for_each.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.iteration.metafunctions.for_each.header"></a><h6>
<a name="id580429"></a>
<a href="for_each.html#fusion.algorithms.iteration.metafunctions.for_each.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">iteration</span><span class="special">/</span><span class="identifier">for_each</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="accumulate.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="../../query.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<title>Query</title>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h3 class="title">
<a name="fusion.algorithms.query"></a><a href="query.html" title="Query">Query</a></h3></div></div></div>
<div class="toc"><dl>
<dt><span class="section"><a href="query/functions.html">Functions</a></span></dt>
<dt><span class="section"><a href="query/metafunctions.html">Metafunctions</a></span></dt>
</dl></div>
<p>
The query algorithms provide support for searching and analyzing sequences.
</p>
<a name="fusion.algorithms.query.header"></a><h4>
<a name="id580564"></a>
<a href="query.html#fusion.algorithms.query.header">Header</a>
</h4>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">query</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="iteration/metafunctions/for_each.html"><img src="../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../algorithms.html"><img src="../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="query/functions.html"><img src="../../../../../../doc/html/images/next.png" alt="Next"></a>
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<div class="titlepage"><div><div><h4 class="title">
<a name="fusion.algorithms.query.functions"></a><a href="functions.html" title="Functions">Functions</a></h4></div></div></div>
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<dt><span class="section"><a href="functions/any.html">any</a></span></dt>
<dt><span class="section"><a href="functions/all.html">all</a></span></dt>
<dt><span class="section"><a href="functions/none.html">none</a></span></dt>
<dt><span class="section"><a href="functions/find.html">find</a></span></dt>
<dt><span class="section"><a href="functions/find_if.html">find_if</a></span></dt>
<dt><span class="section"><a href="functions/count.html">count</a></span></dt>
<dt><span class="section"><a href="functions/count_if.html">count_if</a></span></dt>
</dl></div>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.query.functions.all"></a><a href="all.html" title="all">all</a></h5></div></div></div>
<a name="fusion.algorithms.query.functions.all.description"></a><h6>
<a name="id581898"></a>
<a href="all.html#fusion.algorithms.query.functions.all.description">Description</a>
</h6>
<p>
For a sequence <tt class="computeroutput"><span class="identifier">seq</span></tt> and
unary function object <tt class="computeroutput"><span class="identifier">f</span></tt>,
<tt class="computeroutput"><span class="identifier">all</span></tt> returns true if
<tt class="computeroutput"><span class="identifier">f</span></tt> returns true for every
element of <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithms.query.functions.all.synopsis"></a><h6>
<a name="id581988"></a>
<a href="all.html#fusion.algorithms.query.functions.all.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/all.html" title="all"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">all</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span><span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">all</span><span class="special">(</span>
<span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">F</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id582182"></a><p class="title"><b>Table<EFBFBD>1.40.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>, <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt> is a valid expression, convertible
to <tt class="computeroutput"><span class="keyword">bool</span></tt>, for every
element <tt class="computeroutput"><span class="identifier">e</span></tt> in <tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
The sequence to search
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span></tt>
</p>
</td>
<td>
<p>
A unary function object
</p>
</td>
<td>
<p>
The search predicate
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.query.functions.all.expression_semantics"></a><h6>
<a name="id582383"></a>
<a href="all.html#fusion.algorithms.query.functions.all.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="all.html" title="all"><tt class="computeroutput"><span class="identifier">all</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: <tt class="computeroutput"><span class="keyword">bool</span></tt>
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns true if and only
if <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt>
evaluates to <tt class="computeroutput"><span class="keyword">true</span></tt> for every
element <tt class="computeroutput"><span class="identifier">e</span></tt> in <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithms.query.functions.all.complexity"></a><h6>
<a name="id582552"></a>
<a href="all.html#fusion.algorithms.query.functions.all.complexity">Complexity</a>
</h6>
<p>
Linear. At most <tt class="computeroutput"><a href="../../../sequences/intrinsics/metafunctions/size.html" title="size"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">value</span></tt> comparisons.
</p>
<a name="fusion.algorithms.query.functions.all.header"></a><h6>
<a name="id582636"></a>
<a href="all.html#fusion.algorithms.query.functions.all.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">query</span><span class="special">/</span><span class="identifier">all</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.query.functions.all.example"></a><h6>
<a name="id582742"></a>
<a href="all.html#fusion.algorithms.query.functions.all.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">struct</span> <span class="identifier">odd</span>
<span class="special">{</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">T</span> <span class="identifier">t</span><span class="special">)</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">t</span> <span class="special">%</span> <span class="number">2</span><span class="special">;</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="special">...</span>
<span class="identifier">assert</span><span class="special">(</span><a href="all.html" title="all"><tt class="computeroutput"><span class="identifier">all</span></tt></a><span class="special">(</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">3</span><span class="special">),</span> <span class="identifier">odd</span><span class="special">()));</span>
<span class="identifier">assert</span><span class="special">(!</span><a href="all.html" title="all"><tt class="computeroutput"><span class="identifier">all</span></tt></a><span class="special">(</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">),</span> <span class="identifier">odd</span><span class="special">()));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.query.functions.any"></a><a href="any.html" title="any">any</a></h5></div></div></div>
<a name="fusion.algorithms.query.functions.any.description"></a><h6>
<a name="id580699"></a>
<a href="any.html#fusion.algorithms.query.functions.any.description">Description</a>
</h6>
<p>
For a sequence <tt class="computeroutput"><span class="identifier">seq</span></tt> and
unary function object <tt class="computeroutput"><span class="identifier">f</span></tt>,
<tt class="computeroutput"><span class="identifier">any</span></tt> returns true if
<tt class="computeroutput"><span class="identifier">f</span></tt> returns true for at
least one element of <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithms.query.functions.any.synopsis"></a><h6>
<a name="id580788"></a>
<a href="any.html#fusion.algorithms.query.functions.any.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/any.html" title="any"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">any</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span><span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">any</span><span class="special">(</span>
<span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">F</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id580982"></a><p class="title"><b>Table<EFBFBD>1.39.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>, <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt> must be a valid expression, convertible
to <tt class="computeroutput"><span class="keyword">bool</span></tt>, for each
element <tt class="computeroutput"><span class="identifier">e</span></tt> in <tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
The sequence to search
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span></tt>
</p>
</td>
<td>
<p>
A unary function object
</p>
</td>
<td>
<p>
The search predicate
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.query.functions.any.expression_semantics"></a><h6>
<a name="id581183"></a>
<a href="any.html#fusion.algorithms.query.functions.any.expression_semantics">Expression
semantics</a>
</h6>
<pre class="programlisting">
<a href="any.html" title="any"><tt class="computeroutput"><span class="identifier">any</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: <tt class="computeroutput"><span class="keyword">bool</span></tt>
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns true if and only
if <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt>
evaluates to <tt class="computeroutput"><span class="keyword">true</span></tt> for some
element <tt class="computeroutput"><span class="identifier">e</span></tt> in <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithms.query.functions.any.complexity"></a><h6>
<a name="id581354"></a>
<a href="any.html#fusion.algorithms.query.functions.any.complexity">Complexity</a>
</h6>
<p>
Linear. At most <tt class="computeroutput"><a href="../../../sequences/intrinsics/metafunctions/size.html" title="size"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">value</span></tt> comparisons.
</p>
<a name="fusion.algorithms.query.functions.any.header"></a><h6>
<a name="id581438"></a>
<a href="any.html#fusion.algorithms.query.functions.any.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">query</span><span class="special">/</span><span class="identifier">any</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.query.functions.any.example"></a><h6>
<a name="id581543"></a>
<a href="any.html#fusion.algorithms.query.functions.any.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">struct</span> <span class="identifier">odd</span>
<span class="special">{</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">T</span> <span class="identifier">t</span><span class="special">)</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">t</span> <span class="special">%</span> <span class="number">2</span><span class="special">;</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="special">...</span>
<span class="identifier">assert</span><span class="special">(</span><a href="any.html" title="any"><tt class="computeroutput"><span class="identifier">any</span></tt></a><span class="special">(</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">),</span> <span class="identifier">odd</span><span class="special">()));</span>
<span class="identifier">assert</span><span class="special">(!</span><a href="any.html" title="any"><tt class="computeroutput"><span class="identifier">any</span></tt></a><span class="special">(</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">2</span><span class="special">,</span><span class="number">4</span><span class="special">),</span> <span class="identifier">odd</span><span class="special">()));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
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<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.query.functions.count"></a><a href="count.html" title="count">count</a></h5></div></div></div>
<a name="fusion.algorithms.query.functions.count.description"></a><h6>
<a name="id586595"></a>
<a href="count.html#fusion.algorithms.query.functions.count.description">Description</a>
</h6>
<p>
Returns the number of elements of a given type within a sequence.
</p>
<a name="fusion.algorithms.query.functions.count.synopsis"></a><h6>
<a name="id586626"></a>
<a href="count.html#fusion.algorithms.query.functions.count.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">T</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/count.html" title="count"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">count</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">count</span><span class="special">(</span>
<span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">T</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">t</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id586834"></a><p class="title"><b>Table<EFBFBD>1.44.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>, <tt class="computeroutput"><span class="identifier">e</span> <span class="special">==</span> <span class="identifier">t</span></tt>
must be a valid expression, convertible to <tt class="computeroutput"><span class="keyword">bool</span></tt>,
for each element <tt class="computeroutput"><span class="identifier">e</span></tt>
in <tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
The sequence to search
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">T</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
The type to count
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.query.functions.count.expression_semantics"></a><h6>
<a name="id587032"></a>
<a href="count.html#fusion.algorithms.query.functions.count.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="count.html" title="count"><tt class="computeroutput"><span class="identifier">count</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">t</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: <tt class="computeroutput"><span class="keyword">int</span></tt>
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns the number of elements
of type <tt class="computeroutput"><span class="identifier">T</span></tt> and equal to
<tt class="computeroutput"><span class="identifier">t</span></tt> in <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithms.query.functions.count.complexity"></a><h6>
<a name="id587176"></a>
<a href="count.html#fusion.algorithms.query.functions.count.complexity">Complexity</a>
</h6>
<p>
Linear. At most <tt class="computeroutput"><a href="../../../sequences/intrinsics/metafunctions/size.html" title="size"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">value</span></tt> comparisons.
</p>
<a name="fusion.algorithms.query.functions.count.header"></a><h6>
<a name="id587260"></a>
<a href="count.html#fusion.algorithms.query.functions.count.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">query</span><span class="special">/</span><span class="identifier">count</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.query.functions.count.example"></a><h6>
<a name="id587366"></a>
<a href="count.html#fusion.algorithms.query.functions.count.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">const</span> <a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">double</span><span class="special">,</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="identifier">vec</span><span class="special">(</span><span class="number">1.0</span><span class="special">,</span><span class="number">2</span><span class="special">,</span><span class="number">3</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><a href="count.html" title="count"><tt class="computeroutput"><span class="identifier">count</span></tt></a><span class="special">(</span><span class="identifier">vec</span><span class="special">,</span><span class="number">2</span><span class="special">)</span> <span class="special">==</span> <span class="number">1</span><span class="special">);</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>count_if</title>
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.query.functions.count_if"></a><a href="count_if.html" title="count_if">count_if</a></h5></div></div></div>
<a name="fusion.algorithms.query.functions.count_if.description"></a><h6>
<a name="id587583"></a>
<a href="count_if.html#fusion.algorithms.query.functions.count_if.description">Description</a>
</h6>
<p>
Returns the number of elements within a sequence with a type for which
a given unary function object evaluates to <tt class="computeroutput"><span class="keyword">true</span></tt>.
</p>
<a name="fusion.algorithms.query.functions.count_if.synopsis"></a><h6>
<a name="id587627"></a>
<a href="count_if.html#fusion.algorithms.query.functions.count_if.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/count_if.html" title="count_if"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">count_if</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">count_if</span><span class="special">(</span>
<span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">F</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id587824"></a><p class="title"><b>Table<EFBFBD>1.45.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>, <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt> is a valid expression, convertible
to <tt class="computeroutput"><span class="keyword">bool</span></tt>, for each
element <tt class="computeroutput"><span class="identifier">e</span></tt> in <tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
The sequence to search
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span></tt>
</p>
</td>
<td>
<p>
A unary function object
</p>
</td>
<td>
<p>
The search predicate
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.query.functions.count_if.expression_semantics"></a><h6>
<a name="id588025"></a>
<a href="count_if.html#fusion.algorithms.query.functions.count_if.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="count_if.html" title="count_if"><tt class="computeroutput"><span class="identifier">count_if</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">f</span><span class="special">)</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: <tt class="computeroutput"><span class="keyword">int</span></tt>
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns the number of elements
in <tt class="computeroutput"><span class="identifier">seq</span></tt> where <tt class="computeroutput"><span class="identifier">f</span></tt> evaluates to <tt class="computeroutput"><span class="keyword">true</span></tt>.
</p>
<a name="fusion.algorithms.query.functions.count_if.complexity"></a><h6>
<a name="id588169"></a>
<a href="count_if.html#fusion.algorithms.query.functions.count_if.complexity">Complexity</a>
</h6>
<p>
Linear. At most <tt class="computeroutput"><a href="../../../sequences/intrinsics/metafunctions/size.html" title="size"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">value</span></tt> comparisons.
</p>
<a name="fusion.algorithms.query.functions.count_if.header"></a><h6>
<a name="id588252"></a>
<a href="count_if.html#fusion.algorithms.query.functions.count_if.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">query</span><span class="special">/</span><span class="identifier">count_if</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.query.functions.count_if.example"></a><h6>
<a name="id588359"></a>
<a href="count_if.html#fusion.algorithms.query.functions.count_if.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">const</span> <a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="identifier">vec</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">,</span><span class="number">3</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><a href="count_if.html" title="count_if"><tt class="computeroutput"><span class="identifier">count_if</span></tt></a><span class="special">(</span><span class="identifier">vec</span><span class="special">,</span><span class="identifier">odd</span><span class="special">())</span> <span class="special">==</span> <span class="number">2</span><span class="special">);</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="count.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>find</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.query.functions.find"></a><a href="find.html" title="find">find</a></h5></div></div></div>
<a name="fusion.algorithms.query.functions.find.description"></a><h6>
<a name="id584340"></a>
<a href="find.html#fusion.algorithms.query.functions.find.description">Description</a>
</h6>
<p>
Finds the first element of a given type within a sequence.
</p>
<a name="fusion.algorithms.query.functions.find.synopsis"></a><h6>
<a name="id584372"></a>
<a href="find.html#fusion.algorithms.query.functions.find.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">T</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span>
<span class="special">&gt;</span>
<span class="emphasis"><em>unspecified</em></span> <span class="identifier">find</span><span class="special">(</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">);</span>
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">T</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span>
<span class="special">&gt;</span>
<span class="emphasis"><em>unspecified</em></span> <span class="identifier">find</span><span class="special">(</span><span class="identifier">Sequence</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id584571"></a><p class="title"><b>Table<EFBFBD>1.42.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
The sequence to search
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">T</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
The type to search for
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.query.functions.find.expression_semantics"></a><h6>
<a name="id584710"></a>
<a href="find.html#fusion.algorithms.query.functions.find.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="find.html" title="find"><tt class="computeroutput"><span class="identifier">find</span></tt></a><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;(</span><span class="identifier">seq</span><span class="special">)</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of the same iterator
category as the iterators of <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns an iterator to the
first element of <tt class="computeroutput"><span class="identifier">seq</span></tt>
of type <tt class="computeroutput"><span class="identifier">T</span></tt>, or <tt class="computeroutput"><a href="../../../sequences/intrinsics/functions/end.html" title="end"><tt class="computeroutput"><span class="identifier">end</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">)</span></tt> if there is no such element. Equivalent
to <tt class="computeroutput"><a href="find_if.html" title="find_if"><tt class="computeroutput"><span class="identifier">find_if</span></tt></a><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_same</span><span class="special">&lt;</span><span class="identifier">_</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&gt;(</span><span class="identifier">seq</span><span class="special">)</span></tt>
</p>
<a name="fusion.algorithms.query.functions.find.complexity"></a><h6>
<a name="id584964"></a>
<a href="find.html#fusion.algorithms.query.functions.find.complexity">Complexity</a>
</h6>
<p>
Linear. At most <tt class="computeroutput"><a href="../../../sequences/intrinsics/metafunctions/size.html" title="size"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">value</span></tt> comparisons.
</p>
<a name="fusion.algorithms.query.functions.find.header"></a><h6>
<a name="id585048"></a>
<a href="find.html#fusion.algorithms.query.functions.find.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">query</span><span class="special">/</span><span class="identifier">find</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.query.functions.find.example"></a><h6>
<a name="id585154"></a>
<a href="find.html#fusion.algorithms.query.functions.find.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">const</span> <a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">char</span><span class="special">,</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="identifier">vec</span><span class="special">(</span><span class="char">'a'</span><span class="special">,</span><span class="char">'0'</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(*</span><a href="find.html" title="find"><tt class="computeroutput"><span class="identifier">find</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;(</span><span class="identifier">vec</span><span class="special">)</span> <span class="special">==</span> <span class="char">'0'</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><a href="find.html" title="find"><tt class="computeroutput"><span class="identifier">find</span></tt></a><span class="special">&lt;</span><span class="keyword">double</span><span class="special">&gt;(</span><span class="identifier">vec</span><span class="special">)</span> <span class="special">==</span> <a href="../../../sequences/intrinsics/functions/end.html" title="end"><tt class="computeroutput"><span class="identifier">end</span></tt></a><span class="special">(</span><span class="identifier">vec</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="none.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="find_if.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.query.functions.find_if"></a><a href="find_if.html" title="find_if">find_if</a></h5></div></div></div>
<p>
Finds the first element within a sequence with a type for which a given
<a href="http://www.boost.org/libs/mpl/doc/refmanual/lambda-expression.html" target="_top">MPL
Lambda Expression</a> evaluates to <tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">true_</span></tt>.
</p>
<a name="fusion.algorithms.query.functions.find_if.description"></a><h6>
<a name="id585482"></a>
<a href="find_if.html#fusion.algorithms.query.functions.find_if.description">Description</a>
</h6>
<a name="fusion.algorithms.query.functions.find_if.synopsis"></a><h6>
<a name="id585508"></a>
<a href="find_if.html#fusion.algorithms.query.functions.find_if.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">F</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span>
<span class="special">&gt;</span>
<span class="emphasis"><em>unspecified</em></span> <span class="identifier">find_if</span><span class="special">(</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">);</span>
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">F</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span>
<span class="special">&gt;</span>
<span class="emphasis"><em>unspecified</em></span> <span class="identifier">find_if</span><span class="special">(</span><span class="identifier">Sequence</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id585709"></a><p class="title"><b>Table<EFBFBD>1.43.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
The sequence to search
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">F</span></tt>
</p>
</td>
<td>
<p>
A unary <a href="http://www.boost.org/libs/mpl/doc/refmanual/lambda-expression.html" target="_top">MPL
Lambda Expression</a>
</p>
</td>
<td>
<p>
The search predicate
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.query.functions.find_if.expression_semantics"></a><h6>
<a name="id585855"></a>
<a href="find_if.html#fusion.algorithms.query.functions.find_if.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="find_if.html" title="find_if"><tt class="computeroutput"><span class="identifier">find_if</span></tt></a><span class="special">&lt;</span><span class="identifier">F</span><span class="special">&gt;(</span><span class="identifier">seq</span><span class="special">)</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: An iterator of the same
iterator category as the iterators of <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns the first element
of <tt class="computeroutput"><span class="identifier">seq</span></tt> for which <a href="http://www.boost.org/libs/mpl/doc/refmanual/lambda-expression.html" target="_top">MPL
Lambda Expression</a> <tt class="computeroutput"><span class="identifier">F</span></tt>
evaluates to <tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">true_</span></tt>, or <tt class="computeroutput"><a href="../../../sequences/intrinsics/functions/end.html" title="end"><tt class="computeroutput"><span class="identifier">end</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">)</span></tt>
if there is no such element.
</p>
<a name="fusion.algorithms.query.functions.find_if.complexity"></a><h6>
<a name="id586064"></a>
<a href="find_if.html#fusion.algorithms.query.functions.find_if.complexity">Complexity</a>
</h6>
<p>
Linear. At most <tt class="computeroutput"><a href="../../../sequences/intrinsics/metafunctions/size.html" title="size"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">value</span></tt> comparisons.
</p>
<a name="fusion.algorithms.query.functions.find_if.header"></a><h6>
<a name="id586148"></a>
<a href="find_if.html#fusion.algorithms.query.functions.find_if.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">query</span><span class="special">/</span><span class="identifier">find_if</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.query.functions.find_if.example"></a><h6>
<a name="id586255"></a>
<a href="find_if.html#fusion.algorithms.query.functions.find_if.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">const</span> <a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">double</span><span class="special">,</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="identifier">vec</span><span class="special">(</span><span class="number">1.0</span><span class="special">,</span><span class="number">2</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(*</span><a href="find_if.html" title="find_if"><tt class="computeroutput"><span class="identifier">find_if</span></tt></a><span class="special">&lt;</span><span class="identifier">is_integral</span><span class="special">&lt;</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">_</span><span class="special">&gt;</span> <span class="special">&gt;(</span><span class="identifier">vec</span><span class="special">)</span> <span class="special">==</span> <span class="number">2</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><a href="find_if.html" title="find_if"><tt class="computeroutput"><span class="identifier">find_if</span></tt></a><span class="special">&lt;</span><span class="identifier">is_class</span><span class="special">&lt;</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">_</span><span class="special">&gt;</span> <span class="special">&gt;(</span><span class="identifier">vec</span><span class="special">)</span> <span class="special">==</span> <a href="../../../sequences/intrinsics/functions/end.html" title="end"><tt class="computeroutput"><span class="identifier">end</span></tt></a><span class="special">(</span><span class="identifier">vec</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.query.functions.none"></a><a href="none.html" title="none">none</a></h5></div></div></div>
<a name="fusion.algorithms.query.functions.none.description"></a><h6>
<a name="id583097"></a>
<a href="none.html#fusion.algorithms.query.functions.none.description">Description</a>
</h6>
<p>
For a sequence <tt class="computeroutput"><span class="identifier">seq</span></tt> and
unary function object <tt class="computeroutput"><span class="identifier">f</span></tt>,
<tt class="computeroutput"><span class="identifier">none</span></tt> returns true if
<tt class="computeroutput"><span class="identifier">f</span></tt> returns false for every
element of <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithms.query.functions.none.synopsis"></a><h6>
<a name="id583186"></a>
<a href="none.html#fusion.algorithms.query.functions.none.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/none.html" title="none"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">none</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span><span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">none</span><span class="special">(</span>
<span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">F</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id583381"></a><p class="title"><b>Table<EFBFBD>1.41.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>, <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt> is a valid expression, convertible
to <tt class="computeroutput"><span class="keyword">bool</span></tt>, for every
element <tt class="computeroutput"><span class="identifier">e</span></tt> in <tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
The sequence to search
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span></tt>
</p>
</td>
<td>
<p>
A unary function object
</p>
</td>
<td>
<p>
The search predicate
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.query.functions.none.expression_semantics"></a><h6>
<a name="id583582"></a>
<a href="none.html#fusion.algorithms.query.functions.none.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="none.html" title="none"><tt class="computeroutput"><span class="identifier">none</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: <tt class="computeroutput"><span class="keyword">bool</span></tt>
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns true if and only
if <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt>
evaluates to <tt class="computeroutput"><span class="keyword">false</span></tt> for every
element <tt class="computeroutput"><span class="identifier">e</span></tt> in <tt class="computeroutput"><span class="identifier">seq</span></tt>. Result equivalent to <tt class="computeroutput"><span class="special">!</span><span class="identifier">any</span><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">f</span><span class="special">)</span></tt>.
</p>
<a name="fusion.algorithms.query.functions.none.complexity"></a><h6>
<a name="id583794"></a>
<a href="none.html#fusion.algorithms.query.functions.none.complexity">Complexity</a>
</h6>
<p>
Linear. At most <tt class="computeroutput"><a href="../../../sequences/intrinsics/metafunctions/size.html" title="size"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">value</span></tt> comparisons.
</p>
<a name="fusion.algorithms.query.functions.none.header"></a><h6>
<a name="id583878"></a>
<a href="none.html#fusion.algorithms.query.functions.none.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">query</span><span class="special">/</span><span class="identifier">none</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.query.functions.none.example"></a><h6>
<a name="id583984"></a>
<a href="none.html#fusion.algorithms.query.functions.none.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">struct</span> <span class="identifier">odd</span>
<span class="special">{</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">T</span> <span class="identifier">t</span><span class="special">)</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">t</span> <span class="special">%</span> <span class="number">2</span><span class="special">;</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="special">...</span>
<span class="identifier">assert</span><span class="special">(</span><a href="none.html" title="none"><tt class="computeroutput"><span class="identifier">none</span></tt></a><span class="special">(</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">2</span><span class="special">,</span><span class="number">4</span><span class="special">),</span> <span class="identifier">odd</span><span class="special">()));</span>
<span class="identifier">assert</span><span class="special">(!</span><a href="none.html" title="none"><tt class="computeroutput"><span class="identifier">none</span></tt></a><span class="special">(</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">),</span> <span class="identifier">odd</span><span class="special">()));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
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<dt><span class="section"><a href="metafunctions/any.html">any</a></span></dt>
<dt><span class="section"><a href="metafunctions/all.html">all</a></span></dt>
<dt><span class="section"><a href="metafunctions/none.html">none</a></span></dt>
<dt><span class="section"><a href="metafunctions/find.html">find</a></span></dt>
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<dt><span class="section"><a href="metafunctions/count.html">count</a></span></dt>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.query.metafunctions.all"></a><a href="all.html" title="all">all</a></h5></div></div></div>
<a name="fusion.algorithms.query.metafunctions.all.description"></a><h6>
<a name="id589262"></a>
<a href="all.html#fusion.algorithms.query.metafunctions.all.description">Description</a>
</h6>
<p>
A metafunction returning the result type of <a href="../functions/all.html" title="all"><tt class="computeroutput"><span class="identifier">all</span></tt></a>.
</p>
<a name="fusion.algorithms.query.metafunctions.all.synopsis"></a><h6>
<a name="id589310"></a>
<a href="all.html#fusion.algorithms.query.metafunctions.all.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">all</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">bool</span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id589432"></a><p class="title"><b>Table<EFBFBD>1.47.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">F</span></tt>
</p>
</td>
<td>
<p>
A model of unary <a href="../../../functional/concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.query.metafunctions.all.expression_semantics"></a><h6>
<a name="id589580"></a>
<a href="all.html#fusion.algorithms.query.metafunctions.all.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="all.html" title="all"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">all</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: <tt class="computeroutput"><span class="keyword">bool</span></tt>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns the return type of
<a href="../functions/all.html" title="all"><tt class="computeroutput"><span class="identifier">all</span></tt></a>
given a sequence of type <tt class="computeroutput"><span class="identifier">Sequence</span></tt>
and a unary <a href="../../../functional/concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a> of type <tt class="computeroutput"><span class="identifier">F</span></tt>.
The return type is always <tt class="computeroutput"><span class="keyword">bool</span></tt>.
</p>
<a name="fusion.algorithms.query.metafunctions.all.complexity"></a><h6>
<a name="id589768"></a>
<a href="all.html#fusion.algorithms.query.metafunctions.all.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.query.metafunctions.all.header"></a><h6>
<a name="id589798"></a>
<a href="all.html#fusion.algorithms.query.metafunctions.all.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">query</span><span class="special">/</span><span class="identifier">all</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="any.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="none.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>any</title>
<link rel="stylesheet" href="../../../../boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
<link rel="start" href="../../../../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
<link rel="up" href="../metafunctions.html" title="Metafunctions">
<link rel="prev" href="../metafunctions.html" title="Metafunctions">
<link rel="next" href="all.html" title="all">
</head>
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<table cellpadding="2" width="100%"><tr>
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../../boost.png"></td>
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<a accesskey="p" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="all.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.query.metafunctions.any"></a><a href="any.html" title="any">any</a></h5></div></div></div>
<a name="fusion.algorithms.query.metafunctions.any.description"></a><h6>
<a name="id588597"></a>
<a href="any.html#fusion.algorithms.query.metafunctions.any.description">Description</a>
</h6>
<p>
A metafunction returning the result type of <a href="../functions/any.html" title="any"><tt class="computeroutput"><span class="identifier">any</span></tt></a>.
</p>
<a name="fusion.algorithms.query.metafunctions.any.synopsis"></a><h6>
<a name="id588645"></a>
<a href="any.html#fusion.algorithms.query.metafunctions.any.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">any</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">bool</span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id588767"></a><p class="title"><b>Table<EFBFBD>1.46.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">F</span></tt>
</p>
</td>
<td>
<p>
A model of unary <a href="../../../functional/concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.query.metafunctions.any.expression_semantics"></a><h6>
<a name="id588917"></a>
<a href="any.html#fusion.algorithms.query.metafunctions.any.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="any.html" title="any"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">any</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: <tt class="computeroutput"><span class="keyword">bool</span></tt>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns the return type of
<a href="../functions/any.html" title="any"><tt class="computeroutput"><span class="identifier">any</span></tt></a>
given a sequence of type <tt class="computeroutput"><span class="identifier">Sequence</span></tt>
and a unary <a href="../../../functional/concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a> of type <tt class="computeroutput"><span class="identifier">F</span></tt>.
The return type is always <tt class="computeroutput"><span class="keyword">bool</span></tt>.
</p>
<a name="fusion.algorithms.query.metafunctions.any.complexity"></a><h6>
<a name="id589105"></a>
<a href="any.html#fusion.algorithms.query.metafunctions.any.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.query.metafunctions.any.header"></a><h6>
<a name="id589135"></a>
<a href="any.html#fusion.algorithms.query.metafunctions.any.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">query</span><span class="special">/</span><span class="identifier">any</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="all.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>count</title>
<link rel="stylesheet" href="../../../../boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
<link rel="start" href="../../../../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
<link rel="up" href="../metafunctions.html" title="Metafunctions">
<link rel="prev" href="find_if.html" title="find_if">
<link rel="next" href="count_if.html" title="count_if">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table cellpadding="2" width="100%"><tr>
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../../boost.png"></td>
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<div class="spirit-nav">
<a accesskey="p" href="find_if.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="count_if.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.query.metafunctions.count"></a><a href="count.html" title="count">count</a></h5></div></div></div>
<a name="fusion.algorithms.query.metafunctions.count.description"></a><h6>
<a name="id592038"></a>
<a href="count.html#fusion.algorithms.query.metafunctions.count.description">Description</a>
</h6>
<p>
A metafunction that returns the result type of <tt class="computeroutput"><span class="identifier">count</span></tt>
given the sequence and search types.
</p>
<a name="fusion.algorithms.query.metafunctions.count.synopsis"></a><h6>
<a name="id592082"></a>
<a href="count.html#fusion.algorithms.query.metafunctions.count.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">T</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">count</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">int</span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id592203"></a><p class="title"><b>Table<EFBFBD>1.51.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
heading Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">T</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.query.metafunctions.count.expression_semantics"></a><h6>
<a name="id592342"></a>
<a href="count.html#fusion.algorithms.query.metafunctions.count.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="count.html" title="count"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">count</span></tt></a><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: <tt class="computeroutput"><span class="keyword">int</span></tt>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns the return type of
<a href="../functions/count.html" title="count"><tt class="computeroutput"><span class="identifier">count</span></tt></a>. The return type is always
<tt class="computeroutput"><span class="keyword">int</span></tt>.
</p>
<a name="fusion.algorithms.query.metafunctions.count.complexity"></a><h6>
<a name="id592487"></a>
<a href="count.html#fusion.algorithms.query.metafunctions.count.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.query.metafunctions.count.header"></a><h6>
<a name="id592516"></a>
<a href="count.html#fusion.algorithms.query.metafunctions.count.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">query</span><span class="special">/</span><span class="identifier">count</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="find_if.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="count_if.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
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<title>count_if</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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<table cellpadding="2" width="100%"><tr>
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../../boost.png"></td>
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<hr>
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<a accesskey="p" href="count.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="../../transformation.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.query.metafunctions.count_if"></a><a href="count_if.html" title="count_if">count_if</a></h5></div></div></div>
<a name="fusion.algorithms.query.metafunctions.count_if.description"></a><h6>
<a name="id592644"></a>
<a href="count_if.html#fusion.algorithms.query.metafunctions.count_if.description">Description</a>
</h6>
<p>
A metafunction that returns the result type of <tt class="computeroutput"><span class="identifier">count_if</span></tt>
given the sequence and predicate types.
</p>
<a name="fusion.algorithms.query.metafunctions.count_if.synopsis"></a><h6>
<a name="id592689"></a>
<a href="count_if.html#fusion.algorithms.query.metafunctions.count_if.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Pred</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">count_if</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">int</span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id592810"></a><p class="title"><b>Table<EFBFBD>1.52.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Pred</span></tt>
</p>
</td>
<td>
<p>
A unary function object
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.query.metafunctions.count_if.expression_semantics"></a><h6>
<a name="id592951"></a>
<a href="count_if.html#fusion.algorithms.query.metafunctions.count_if.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="count_if.html" title="count_if"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">count_if</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">Pred</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: <tt class="computeroutput"><span class="keyword">int</span></tt>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns the return type of
<a href="../functions/count_if.html" title="count_if"><tt class="computeroutput"><span class="identifier">count_if</span></tt></a>. The return type is
always <tt class="computeroutput"><span class="keyword">int</span></tt>.
</p>
<a name="fusion.algorithms.query.metafunctions.count_if.complexity"></a><h6>
<a name="id593108"></a>
<a href="count_if.html#fusion.algorithms.query.metafunctions.count_if.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.query.metafunctions.count_if.header"></a><h6>
<a name="id593138"></a>
<a href="count_if.html#fusion.algorithms.query.metafunctions.count_if.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">query</span><span class="special">/</span><span class="identifier">count_if</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="count.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="../../transformation.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>find</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
<link rel="start" href="../../../../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
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<a accesskey="p" href="none.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="find_if.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.query.metafunctions.find"></a><a href="find.html" title="find">find</a></h5></div></div></div>
<a name="fusion.algorithms.query.metafunctions.find.description"></a><h6>
<a name="id590592"></a>
<a href="find.html#fusion.algorithms.query.metafunctions.find.description">Description</a>
</h6>
<p>
Returns the result type of <tt class="computeroutput"><span class="identifier">find</span></tt>,
given the sequence and search types.
</p>
<a name="fusion.algorithms.query.metafunctions.find.synopsis"></a><h6>
<a name="id590635"></a>
<a href="find.html#fusion.algorithms.query.metafunctions.find.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">T</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">find</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id590754"></a><p class="title"><b>Table<EFBFBD>1.49.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
Model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">T</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.query.metafunctions.find.expression_semantics"></a><h6>
<a name="id590893"></a>
<a href="find.html#fusion.algorithms.query.metafunctions.find.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="find.html" title="find"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">find</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of the same iterator
category as the iterators of <tt class="computeroutput"><span class="identifier">Sequence</span></tt>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns an iterator to the
first element of type <tt class="computeroutput"><span class="identifier">T</span></tt>
in <tt class="computeroutput"><span class="identifier">Sequence</span></tt>, or <tt class="computeroutput"><a href="../../../sequences/intrinsics/metafunctions/end.html" title="end"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">end</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">type</span></tt> if there is no such element.
</p>
<a name="fusion.algorithms.query.metafunctions.find.complexity"></a><h6>
<a name="id591097"></a>
<a href="find.html#fusion.algorithms.query.metafunctions.find.complexity">Complexity</a>
</h6>
<p>
Linear, at most <tt class="computeroutput"><a href="../../../sequences/intrinsics/metafunctions/size.html" title="size"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">value</span></tt> comparisons.
</p>
<a name="fusion.algorithms.query.metafunctions.find.header"></a><h6>
<a name="id591180"></a>
<a href="find.html#fusion.algorithms.query.metafunctions.find.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">query</span><span class="special">/</span><span class="identifier">find</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="none.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="find_if.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>find_if</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
<link rel="start" href="../../../../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
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</head>
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<table cellpadding="2" width="100%"><tr>
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<a accesskey="p" href="find.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="count.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.query.metafunctions.find_if"></a><a href="find_if.html" title="find_if">find_if</a></h5></div></div></div>
<a name="fusion.algorithms.query.metafunctions.find_if.description"></a><h6>
<a name="id591309"></a>
<a href="find_if.html#fusion.algorithms.query.metafunctions.find_if.description">Description</a>
</h6>
<p>
Returns the result type of <tt class="computeroutput"><span class="identifier">find_if</span></tt>
given the sequence and predicate types.
</p>
<a name="fusion.algorithms.query.metafunctions.find_if.synopsis"></a><h6>
<a name="id591353"></a>
<a href="find_if.html#fusion.algorithms.query.metafunctions.find_if.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Pred</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">find_if</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id591473"></a><p class="title"><b>Table<EFBFBD>1.50.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Pred</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="http://www.boost.org/libs/mpl/doc/refmanual/lambda-expression.html" target="_top">MPL
Lambda Expression</a>
</p>
</td>
<td>
<p>
Operation's arguments
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.query.metafunctions.find_if.expression_semantics"></a><h6>
<a name="id591621"></a>
<a href="find_if.html#fusion.algorithms.query.metafunctions.find_if.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="find_if.html" title="find_if"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">find_if</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">Pred</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of the same iterator
category as the iterators of <tt class="computeroutput"><span class="identifier">Sequence</span></tt>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns an iterator to the
first element in <tt class="computeroutput"><span class="identifier">Sequence</span></tt>
for which <tt class="computeroutput"><span class="identifier">Pred</span></tt> evaluates
to true. Returns <tt class="computeroutput"><a href="../../../sequences/intrinsics/metafunctions/end.html" title="end"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">end</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">type</span></tt> if there is no such element.
</p>
<a name="fusion.algorithms.query.metafunctions.find_if.complexity"></a><h6>
<a name="id591827"></a>
<a href="find_if.html#fusion.algorithms.query.metafunctions.find_if.complexity">Complexity</a>
</h6>
<p>
Linear. At most <tt class="computeroutput"><a href="../../../sequences/intrinsics/metafunctions/size.html" title="size"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">size</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">value</span></tt> comparisons.
</p>
<a name="fusion.algorithms.query.metafunctions.find_if.header"></a><h6>
<a name="id591911"></a>
<a href="find_if.html#fusion.algorithms.query.metafunctions.find_if.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">query</span><span class="special">/</span><span class="identifier">find_if</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="find.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="count.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<title>none</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
<link rel="start" href="../../../../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
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<table cellpadding="2" width="100%"><tr>
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.query.metafunctions.none"></a><a href="none.html" title="none">none</a></h5></div></div></div>
<a name="fusion.algorithms.query.metafunctions.none.description"></a><h6>
<a name="id589925"></a>
<a href="none.html#fusion.algorithms.query.metafunctions.none.description">Description</a>
</h6>
<p>
A metafunction returning the result type of <a href="../functions/none.html" title="none"><tt class="computeroutput"><span class="identifier">none</span></tt></a>.
</p>
<a name="fusion.algorithms.query.metafunctions.none.synopsis"></a><h6>
<a name="id589974"></a>
<a href="none.html#fusion.algorithms.query.metafunctions.none.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">none</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">bool</span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id590095"></a><p class="title"><b>Table<EFBFBD>1.48.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">F</span></tt>
</p>
</td>
<td>
<p>
A model of unary <a href="../../../functional/concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.query.metafunctions.none.expression_semantics"></a><h6>
<a name="id590243"></a>
<a href="none.html#fusion.algorithms.query.metafunctions.none.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="none.html" title="none"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">none</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: <tt class="computeroutput"><span class="keyword">bool</span></tt>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns the return type of
<a href="../functions/none.html" title="none"><tt class="computeroutput"><span class="identifier">none</span></tt></a> given a sequence of type
<tt class="computeroutput"><span class="identifier">Sequence</span></tt> and a unary
<a href="../../../functional/concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a> of type <tt class="computeroutput"><span class="identifier">F</span></tt>.
The return type is always <tt class="computeroutput"><span class="keyword">bool</span></tt>.
</p>
<a name="fusion.algorithms.query.metafunctions.none.complexity"></a><h6>
<a name="id590433"></a>
<a href="none.html#fusion.algorithms.query.metafunctions.none.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.query.metafunctions.none.header"></a><h6>
<a name="id590462"></a>
<a href="none.html#fusion.algorithms.query.metafunctions.none.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">query</span><span class="special">/</span><span class="identifier">none</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Transformation</title>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h3 class="title">
<a name="fusion.algorithms.transformation"></a><a href="transformation.html" title="Transformation">Transformation</a></h3></div></div></div>
<div class="toc"><dl>
<dt><span class="section"><a href="transformation/functions.html">Functions</a></span></dt>
<dt><span class="section"><a href="transformation/metafunctions.html">Metafunctions</a></span></dt>
</dl></div>
<p>
The transformation algorithms create new sequences out of existing sequences
by performing some sort of transformation. In reality the new sequences are
views onto the data in the original sequences.
</p>
<div class="note"><table border="0" summary="Note">
<tr>
<td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../../doc/html/images/note.png"></td>
<th align="left">Note</th>
</tr>
<tr><td colspan="2" align="left" valign="top"><p>
As the transformation algorithms return views onto their input arguments,
it is important that the lifetime of the input arguments is greater than
the period during which you wish to use the results.
</p></td></tr>
</table></div>
<a name="fusion.algorithms.transformation.header"></a><h4>
<a name="id593287"></a>
<a href="transformation.html#fusion.algorithms.transformation.header">Header</a>
</h4>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
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<a name="fusion.algorithms.transformation.functions"></a><a href="functions.html" title="Functions">Functions</a></h4></div></div></div>
<div class="toc"><dl>
<dt><span class="section"><a href="functions/filter.html">filter</a></span></dt>
<dt><span class="section"><a href="functions/filter_if.html">filter_if</a></span></dt>
<dt><span class="section"><a href="functions/transform.html">transform</a></span></dt>
<dt><span class="section"><a href="functions/replace.html">replace</a></span></dt>
<dt><span class="section"><a href="functions/replace_if.html">replace_if</a></span></dt>
<dt><span class="section"><a href="functions/remove.html">remove</a></span></dt>
<dt><span class="section"><a href="functions/remove_if.html">remove_if</a></span></dt>
<dt><span class="section"><a href="functions/reverse.html">reverse</a></span></dt>
<dt><span class="section"><a href="functions/clear.html">clear</a></span></dt>
<dt><span class="section"><a href="functions/erase.html">erase</a></span></dt>
<dt><span class="section"><a href="functions/erase_key.html">erase_key</a></span></dt>
<dt><span class="section"><a href="functions/insert.html">insert</a></span></dt>
<dt><span class="section"><a href="functions/insert_range.html">insert_range</a></span></dt>
<dt><span class="section"><a href="functions/join.html">join</a></span></dt>
<dt><span class="section"><a href="functions/zip.html">zip</a></span></dt>
<dt><span class="section"><a href="functions/pop_back.html">pop_back</a></span></dt>
<dt><span class="section"><a href="functions/pop_front.html">pop_front</a></span></dt>
<dt><span class="section"><a href="functions/push_back.html">push_back</a></span></dt>
<dt><span class="section"><a href="functions/push_front.html">push_front</a></span></dt>
</dl></div>
</div>
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<html>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.clear"></a><a href="clear.html" title="clear">clear</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.clear.description"></a><h6>
<a name="id602328"></a>
<a href="clear.html#fusion.algorithms.transformation.functions.clear.description">Description</a>
</h6>
<p>
<a href="clear.html" title="clear"><tt class="computeroutput"><span class="identifier">clear</span></tt></a> returns an empty sequence.
</p>
<a name="fusion.algorithms.transformation.functions.clear.synposis"></a><h6>
<a name="id602377"></a>
<a href="clear.html#fusion.algorithms.transformation.functions.clear.synposis">Synposis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/clear.html" title="clear"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">clear</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">clear</span><span class="special">(</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id602535"></a><p class="title"><b>Table<EFBFBD>1.62.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr></tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.clear.expression_semantics"></a><h6>
<a name="id602638"></a>
<a href="clear.html#fusion.algorithms.transformation.functions.clear.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="clear.html" title="clear"><tt class="computeroutput"><span class="identifier">clear</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Expression Semantics</b></span>: Returns a sequence
with no elements.
</p>
<a name="fusion.algorithms.transformation.functions.clear.complexity"></a><h6>
<a name="id602737"></a>
<a href="clear.html#fusion.algorithms.transformation.functions.clear.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.functions.clear.header"></a><h6>
<a name="id602768"></a>
<a href="clear.html#fusion.algorithms.transformation.functions.clear.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">clear</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.clear.example"></a><h6>
<a name="id602876"></a>
<a href="clear.html#fusion.algorithms.transformation.functions.clear.example">Example</a>
</h6>
<pre class="programlisting">
<span class="identifier">assert</span><span class="special">(</span><a href="clear.html" title="clear"><tt class="computeroutput"><span class="identifier">clear</span></tt></a><span class="special">(</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">,</span><span class="number">3</span><span class="special">))</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">());</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
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<html>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>erase</title>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.erase"></a><a href="erase.html" title="erase">erase</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.erase.description"></a><h6>
<a name="id603041"></a>
<a href="erase.html#fusion.algorithms.transformation.functions.erase.description">Description</a>
</h6>
<p>
Returns a new sequence, containing all the elements of the original except
those at a specified iterator, or between two iterators.
</p>
<a name="fusion.algorithms.transformation.functions.erase.synposis"></a><h6>
<a name="id603074"></a>
<a href="erase.html#fusion.algorithms.transformation.functions.erase.synposis">Synposis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">First</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/erase.html" title="erase"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">erase</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">First</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">erase</span><span class="special">(</span>
<span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">First</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">it1</span><span class="special">);</span>
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">First</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Last</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/erase.html" title="erase"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">erase</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">First</span><span class="special">,</span> <span class="identifier">Last</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">erase</span><span class="special">(</span>
<span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">First</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">it1</span><span class="special">,</span> <span class="identifier">Last</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">it2</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id603537"></a><p class="title"><b>Table<EFBFBD>1.63.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameters
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">it1</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../iterators/concepts/forward_iterator.html" title="Forward
Iterator">Forward
Iterator</a>
</p>
</td>
<td>
<p>
Iterator into <tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">it2</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../iterators/concepts/forward_iterator.html" title="Forward
Iterator">Forward
Iterator</a>
</p>
</td>
<td>
<p>
Iterator into <tt class="computeroutput"><span class="identifier">seq</span></tt>
after <tt class="computeroutput"><span class="identifier">it1</span></tt>
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.erase.expression_semantics"></a><h6>
<a name="id603764"></a>
<a href="erase.html#fusion.algorithms.transformation.functions.erase.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="erase.html" title="erase"><tt class="computeroutput"><span class="identifier">erase</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">pos</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence, containing
all the elements of <tt class="computeroutput"><span class="identifier">seq</span></tt>
except the element at <tt class="computeroutput"><span class="identifier">pos</span></tt>.
</p>
<pre class="programlisting">
<a href="erase.html" title="erase"><tt class="computeroutput"><span class="identifier">erase</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">first</span><span class="special">,</span> <span class="identifier">last</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence, with
all the elements of <tt class="computeroutput"><span class="identifier">seq</span></tt>,
in their original order, except those in the range [<tt class="computeroutput"><span class="identifier">first</span></tt>,<tt class="computeroutput"><span class="identifier">last</span></tt>).
</p>
<a name="fusion.algorithms.transformation.functions.erase.complexity"></a><h6>
<a name="id604023"></a>
<a href="erase.html#fusion.algorithms.transformation.functions.erase.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.erase.header"></a><h6>
<a name="id604055"></a>
<a href="erase.html#fusion.algorithms.transformation.functions.erase.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">erase</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.erase.example"></a><h6>
<a name="id604163"></a>
<a href="erase.html#fusion.algorithms.transformation.functions.erase.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">const</span> <a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">double</span><span class="special">,</span> <span class="keyword">char</span><span class="special">&gt;</span> <span class="identifier">vec</span><span class="special">(</span><span class="number">1</span><span class="special">,</span> <span class="number">2.0</span><span class="special">,</span> <span class="char">'c'</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><a href="erase.html" title="erase"><tt class="computeroutput"><span class="identifier">erase</span></tt></a><span class="special">(</span><span class="identifier">vec</span><span class="special">,</span> <a href="../../../iterators/functions/next.html" title="next"><tt class="computeroutput"><span class="identifier">next</span></tt></a><span class="special">(</span><a href="../../../sequences/intrinsics/functions/begin.html" title="begin"><tt class="computeroutput"><span class="identifier">begin</span></tt></a><span class="special">(</span><span class="identifier">vec</span><span class="special">)))</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span> <span class="char">'c'</span><span class="special">));</span>
<span class="identifier">assert</span><span class="special">(</span><a href="erase.html" title="erase"><tt class="computeroutput"><span class="identifier">erase</span></tt></a><span class="special">(</span><span class="identifier">vec</span><span class="special">,</span> <a href="../../../iterators/functions/next.html" title="next"><tt class="computeroutput"><span class="identifier">next</span></tt></a><span class="special">(</span><a href="../../../sequences/intrinsics/functions/begin.html" title="begin"><tt class="computeroutput"><span class="identifier">begin</span></tt></a><span class="special">(</span><span class="identifier">vec</span><span class="special">)),</span> <a href="../../../sequences/intrinsics/functions/end.html" title="end"><tt class="computeroutput"><span class="identifier">end</span></tt></a><span class="special">(</span><span class="identifier">vec</span><span class="special">))</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="clear.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="erase_key.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<title>erase_key</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.erase_key"></a><a href="erase_key.html" title="erase_key">erase_key</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.erase_key.description"></a><h6>
<a name="id604621"></a>
<a href="erase_key.html#fusion.algorithms.transformation.functions.erase_key.description">Description</a>
</h6>
<p>
For an <a href="../../../sequences/concepts/associative_sequence.html" title="Associative
Sequence">Associative
Sequence</a> <tt class="computeroutput"><span class="identifier">seq</span></tt>,
returns a <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a> containing all the elements of the original except those
with a given key.
</p>
<a name="fusion.algorithms.transformation.functions.erase_key.synposis"></a><h6>
<a name="id604684"></a>
<a href="erase_key.html#fusion.algorithms.transformation.functions.erase_key.synposis">Synposis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Key</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <span class="identifier">result_of</span><span class="special">::</span><span class="identifier">erase_key</span><span class="special">&lt;</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">Key</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">erase_key</span><span class="special">(</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id604857"></a><p class="title"><b>Table<EFBFBD>1.64.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/associative_sequence.html" title="Associative
Sequence">Associative
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Key</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
Key to erase
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.erase_key.expression_semantics"></a><h6>
<a name="id604998"></a>
<a href="erase_key.html#fusion.algorithms.transformation.functions.erase_key.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="erase_key.html" title="erase_key"><tt class="computeroutput"><span class="identifier">erase_key</span></tt></a><span class="special">&lt;</span><span class="identifier">Key</span><span class="special">&gt;(</span><span class="identifier">seq</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence, containing
all the elements of <tt class="computeroutput"><span class="identifier">seq</span></tt>,
except those with key <tt class="computeroutput"><span class="identifier">Key</span></tt>.
</p>
<a name="fusion.algorithms.transformation.functions.erase_key.complexity"></a><h6>
<a name="id605129"></a>
<a href="erase_key.html#fusion.algorithms.transformation.functions.erase_key.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.erase_key.header"></a><h6>
<a name="id605160"></a>
<a href="erase_key.html#fusion.algorithms.transformation.functions.erase_key.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">erase_key</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.erase_key.example"></a><h6>
<a name="id605268"></a>
<a href="erase_key.html#fusion.algorithms.transformation.functions.erase_key.example">Example</a>
</h6>
<pre class="programlisting">
<span class="identifier">assert</span><span class="special">(</span><a href="erase_key.html" title="erase_key"><tt class="computeroutput"><span class="identifier">erase_key</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;(</span><a href="../../../sequences/generation/functions/make_map.html" title="make_map"><tt class="computeroutput"><span class="identifier">make_map</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">long</span><span class="special">&gt;(</span><span class="char">'a'</span><span class="special">,</span> <span class="char">'b'</span><span class="special">))</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_map.html" title="make_map"><tt class="computeroutput"><span class="identifier">make_map</span></tt></a><span class="special">&lt;</span><span class="keyword">long</span><span class="special">&gt;(</span><span class="char">'b'</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="erase.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="insert.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<title>filter</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.filter"></a><a href="filter.html" title="filter">filter</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.filter.description"></a><h6>
<a name="id593426"></a>
<a href="filter.html#fusion.algorithms.transformation.functions.filter.description">Description</a>
</h6>
<p>
For a given sequence, filter returns a new sequences containing only
the elements of a specified type.
</p>
<a name="fusion.algorithms.transformation.functions.filter.synopsis"></a><h6>
<a name="id593459"></a>
<a href="filter.html#fusion.algorithms.transformation.functions.filter.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">T</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/filter.html" title="filter"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">filter</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">filter</span><span class="special">(</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id593645"></a><p class="title"><b>Table<EFBFBD>1.53.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">T</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
The type to retain
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.filter.expression_semantics"></a><h6>
<a name="id593783"></a>
<a href="filter.html#fusion.algorithms.transformation.functions.filter.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="filter.html" title="filter"><tt class="computeroutput"><span class="identifier">filter</span></tt></a><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;(</span><span class="identifier">seq</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a sequence containing
all the elements of <tt class="computeroutput"><span class="identifier">seq</span></tt>
of type <tt class="computeroutput"><span class="identifier">T</span></tt>. Equivalent
to <tt class="computeroutput"><a href="filter_if.html" title="filter_if"><tt class="computeroutput"><span class="identifier">filter_if</span></tt></a><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">same_type</span><span class="special">&lt;</span><span class="identifier">_</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&gt;(</span><span class="identifier">seq</span><span class="special">)</span></tt>.
</p>
<a name="fusion.algorithms.transformation.functions.filter.complexity"></a><h6>
<a name="id593999"></a>
<a href="filter.html#fusion.algorithms.transformation.functions.filter.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.filter.header"></a><h6>
<a name="id594031"></a>
<a href="filter.html#fusion.algorithms.transformation.functions.filter.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">filter</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.filter.example"></a><h6>
<a name="id594139"></a>
<a href="filter.html#fusion.algorithms.transformation.functions.filter.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">const</span> <a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">long</span><span class="special">,</span><span class="keyword">long</span><span class="special">&gt;</span> <span class="identifier">vec</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">,</span><span class="number">3</span><span class="special">,</span><span class="number">4</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><a href="filter.html" title="filter"><tt class="computeroutput"><span class="identifier">filter</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;(</span><span class="identifier">vec</span><span class="special">)</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="../functions.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="filter_if.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.filter_if"></a><a href="filter_if.html" title="filter_if">filter_if</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.filter_if.description"></a><h6>
<a name="id594409"></a>
<a href="filter_if.html#fusion.algorithms.transformation.functions.filter_if.description">Description</a>
</h6>
<p>
For a given sequence, <a href="filter_if.html" title="filter_if"><tt class="computeroutput"><span class="identifier">filter_if</span></tt></a> returns a new sequences
containing only the elements with types for which a given <a href="http://www.boost.org/libs/mpl/doc/refmanual/lambda-expression.html" target="_top">MPL
Lambda Expression</a> evaluates to <tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">true_</span></tt>.
</p>
<a name="fusion.algorithms.transformation.functions.filter_if.synopsis"></a><h6>
<a name="id594499"></a>
<a href="filter_if.html#fusion.algorithms.transformation.functions.filter_if.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Pred</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/filter_if.html" title="filter_if"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">filter_if</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">Pred</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">filter_if</span><span class="special">(</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id594686"></a><p class="title"><b>Table<EFBFBD>1.54.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Pred</span></tt>
</p>
</td>
<td>
<p>
A unary <a href="http://www.boost.org/libs/mpl/doc/refmanual/lambda-expression.html" target="_top">MPL
Lambda Expression</a>
</p>
</td>
<td>
<p>
The predicate to filter by
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.filter_if.expression_semantics"></a><h6>
<a name="id594835"></a>
<a href="filter_if.html#fusion.algorithms.transformation.functions.filter_if.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="filter_if.html" title="filter_if"><tt class="computeroutput"><span class="identifier">filter_if</span></tt></a><span class="special">&lt;</span><span class="identifier">Pred</span><span class="special">&gt;(</span><span class="identifier">seq</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a sequence containing
all the elements of <tt class="computeroutput"><span class="identifier">seq</span></tt>
with types for which <tt class="computeroutput"><span class="identifier">Pred</span></tt>
evaluates to <tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">true_</span></tt>. The order of the retained elements
is the same as in the original sequence.
</p>
<a name="fusion.algorithms.transformation.functions.filter_if.complexity"></a><h6>
<a name="id595001"></a>
<a href="filter_if.html#fusion.algorithms.transformation.functions.filter_if.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.filter_if.header"></a><h6>
<a name="id595033"></a>
<a href="filter_if.html#fusion.algorithms.transformation.functions.filter_if.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">filter_if</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.filter_if.example"></a><h6>
<a name="id595141"></a>
<a href="filter_if.html#fusion.algorithms.transformation.functions.filter_if.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">const</span> <a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">double</span><span class="special">,</span><span class="keyword">double</span><span class="special">&gt;</span> <span class="identifier">vec</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">,</span><span class="number">3.0</span><span class="special">,</span><span class="number">4.0</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><a href="filter_if.html" title="filter_if"><tt class="computeroutput"><span class="identifier">filter_if</span></tt></a><span class="special">&lt;</span><span class="identifier">is_integral</span><span class="special">&lt;</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">_</span><span class="special">&gt;</span> <span class="special">&gt;(</span><span class="identifier">vec</span><span class="special">)</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">));</span>
</pre>
</div>
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<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
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<title>insert</title>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.insert"></a><a href="insert.html" title="insert">insert</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.insert.description"></a><h6>
<a name="id605475"></a>
<a href="insert.html#fusion.algorithms.transformation.functions.insert.description">Description</a>
</h6>
<p>
Returns a new sequence with all the elements of the original, an a new
element inserted the position described by a given iterator.
</p>
<a name="fusion.algorithms.transformation.functions.insert.synposis"></a><h6>
<a name="id605509"></a>
<a href="insert.html#fusion.algorithms.transformation.functions.insert.synposis">Synposis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Pos</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">T</span>
<span class="special">&gt;</span>
<span class="emphasis"><em>unspecified</em></span> <span class="identifier">insert</span><span class="special">(</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">Pos</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">pos</span><span class="special">,</span> <span class="identifier">T</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">t</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id605700"></a><p class="title"><b>Table<EFBFBD>1.65.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">pos</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../iterators/concepts/forward_iterator.html" title="Forward
Iterator">Forward
Iterator</a>
</p>
</td>
<td>
<p>
The position to insert at
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">t</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
The value to insert
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.insert.expression_semantics"></a><h6>
<a name="id605885"></a>
<a href="insert.html#fusion.algorithms.transformation.functions.insert.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="insert.html" title="insert"><tt class="computeroutput"><span class="identifier">insert</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">p</span><span class="special">,</span> <span class="identifier">t</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence, containing
all the elements of <tt class="computeroutput"><span class="identifier">seq</span></tt>,
in their original order, and a new element with the type and value of
<tt class="computeroutput"><span class="identifier">t</span></tt> inserted at iterator
<tt class="computeroutput"><span class="identifier">pos</span></tt>.
</p>
<a name="fusion.algorithms.transformation.functions.insert.complexity"></a><h6>
<a name="id606040"></a>
<a href="insert.html#fusion.algorithms.transformation.functions.insert.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.insert.header"></a><h6>
<a name="id606073"></a>
<a href="insert.html#fusion.algorithms.transformation.functions.insert.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">insert</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.insert.example"></a><h6>
<a name="id606180"></a>
<a href="insert.html#fusion.algorithms.transformation.functions.insert.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">const</span> <a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="identifier">vec</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><a href="insert.html" title="insert"><tt class="computeroutput"><span class="identifier">insert</span></tt></a><span class="special">(</span><span class="identifier">vec</span><span class="special">,</span> <a href="../../../iterators/functions/next.html" title="next"><tt class="computeroutput"><span class="identifier">next</span></tt></a><span class="special">(</span><a href="../../../sequences/intrinsics/functions/begin.html" title="begin"><tt class="computeroutput"><span class="identifier">begin</span></tt></a><span class="special">(</span><span class="identifier">vec</span><span class="special">)),</span> <span class="number">3</span><span class="special">)</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">3</span><span class="special">,</span><span class="number">2</span><span class="special">));</span>
</pre>
</div>
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<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
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<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.insert_range"></a><a href="insert_range.html" title="insert_range">insert_range</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.insert_range.description"></a><h6>
<a name="id606475"></a>
<a href="insert_range.html#fusion.algorithms.transformation.functions.insert_range.description">Description</a>
</h6>
<p>
Returns a new sequence with another sequence inserted at a specified
iterator.
</p>
<a name="fusion.algorithms.transformation.functions.insert_range.synposis"></a><h6>
<a name="id606508"></a>
<a href="insert_range.html#fusion.algorithms.transformation.functions.insert_range.synposis">Synposis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Pos</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Range</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/insert_range.html" title="insert_range"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">insert_range</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">Pos</span><span class="special">,</span> <span class="identifier">Range</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">insert_range</span><span class="special">(</span>
<span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">Pos</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">pos</span><span class="special">,</span> <span class="identifier">Range</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">range</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id606782"></a><p class="title"><b>Table<EFBFBD>1.66.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">pos</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../iterators/concepts/forward_iterator.html" title="Forward
Iterator">Forward
Iterator</a>
</p>
</td>
<td>
<p>
The position to insert at
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">range</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Range to insert
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.insert_range.expression_semantics"></a><h6>
<a name="id606976"></a>
<a href="insert_range.html#fusion.algorithms.transformation.functions.insert_range.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="insert.html" title="insert"><tt class="computeroutput"><span class="identifier">insert</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">pos</span><span class="special">,</span> <span class="identifier">range</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence, containing
all the elements of <tt class="computeroutput"><span class="identifier">seq</span></tt>,
and the elements of <tt class="computeroutput"><span class="identifier">range</span></tt>
inserted at iterator <tt class="computeroutput"><span class="identifier">pos</span></tt>.
All elements retaining their ordering from the orignal sequences.
</p>
<a name="fusion.algorithms.transformation.functions.insert_range.complexity"></a><h6>
<a name="id607136"></a>
<a href="insert_range.html#fusion.algorithms.transformation.functions.insert_range.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.insert_range.header"></a><h6>
<a name="id607167"></a>
<a href="insert_range.html#fusion.algorithms.transformation.functions.insert_range.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">insert_range</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.insert_range.example"></a><h6>
<a name="id607275"></a>
<a href="insert_range.html#fusion.algorithms.transformation.functions.insert_range.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">const</span> <a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">int</span><span class="special">&gt;</span> <span class="identifier">vec</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><a href="insert_range.html" title="insert_range"><tt class="computeroutput"><span class="identifier">insert_range</span></tt></a><span class="special">(</span><span class="identifier">vec</span><span class="special">,</span> <a href="../../../iterators/functions/next.html" title="next"><tt class="computeroutput"><span class="identifier">next</span></tt></a><span class="special">(</span><a href="../../../sequences/intrinsics/functions/begin.html" title="begin"><tt class="computeroutput"><span class="identifier">begin</span></tt></a><span class="special">(</span><span class="identifier">vec</span><span class="special">)),</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">3</span><span class="special">,</span><span class="number">4</span><span class="special">))</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">3</span><span class="special">,</span><span class="number">4</span><span class="special">,</span><span class="number">2</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="insert.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="join.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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View File

@ -0,0 +1,166 @@
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>join</title>
<link rel="stylesheet" href="../../../../boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
<link rel="start" href="../../../../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.join"></a><a href="join.html" title="join">join</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.join.description"></a><h6>
<a name="id607606"></a>
<a href="join.html#fusion.algorithms.transformation.functions.join.description">Description</a>
</h6>
<p>
Takes 2 sequences and returns a sequence containing the elements of the
first followed by the elements of the second.
</p>
<a name="fusion.algorithms.transformation.functions.join.synopsis"></a><h6>
<a name="id607640"></a>
<a href="join.html#fusion.algorithms.transformation.functions.join.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">LhSequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">RhSequence</span><span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/join.html" title="join"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">join</span></tt></a><span class="special">&lt;</span><span class="identifier">LhSequence</span><span class="special">,</span> <span class="identifier">RhSequence</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">join</span><span class="special">(</span><span class="identifier">LhSequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">lhs</span><span class="special">,</span> <span class="identifier">RhSequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">rhs</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id607847"></a><p class="title"><b>Table<EFBFBD>1.67.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">lhs</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">rhs</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.join.expression_semantics"></a><h6>
<a name="id607995"></a>
<a href="join.html#fusion.algorithms.transformation.functions.join.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="join.html" title="join"><tt class="computeroutput"><span class="identifier">join</span></tt></a><span class="special">(</span><span class="identifier">lhs</span><span class="special">,</span> <span class="identifier">rhs</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a sequence containing
all the elements of <tt class="computeroutput"><span class="identifier">lhs</span></tt>
followed by all the elements of <tt class="computeroutput"><span class="identifier">rhs</span></tt>.
The order of th elements is preserved.
</p>
<a name="fusion.algorithms.transformation.functions.join.complexity"></a><h6>
<a name="id608128"></a>
<a href="join.html#fusion.algorithms.transformation.functions.join.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.join.header"></a><h6>
<a name="id608159"></a>
<a href="join.html#fusion.algorithms.transformation.functions.join.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">join</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.join.example"></a><h6>
<a name="id608266"></a>
<a href="join.html#fusion.algorithms.transformation.functions.join.example">Example</a>
</h6>
<pre class="programlisting">
<a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">char</span><span class="special">&gt;</span> <span class="identifier">v1</span><span class="special">(</span><span class="number">1</span><span class="special">,</span> <span class="char">'a'</span><span class="special">);</span>
<a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">char</span><span class="special">&gt;</span> <span class="identifier">v2</span><span class="special">(</span><span class="number">2</span><span class="special">,</span> <span class="char">'b'</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><a href="join.html" title="join"><tt class="computeroutput"><span class="identifier">join</span></tt></a><span class="special">(</span><span class="identifier">v1</span><span class="special">,</span> <span class="identifier">v2</span><span class="special">)</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="char">'a'</span><span class="special">,</span><span class="number">2</span><span class="special">,</span><span class="char">'b'</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="insert_range.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="zip.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>pop_back</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.pop_back"></a><a href="pop_back.html" title="pop_back">pop_back</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.pop_back.description"></a><h6>
<a name="id609826"></a>
<a href="pop_back.html#fusion.algorithms.transformation.functions.pop_back.description">Description</a>
</h6>
<p>
Returns a new sequence, with the last element of the original removed.
</p>
<a name="fusion.algorithms.transformation.functions.pop_back.synopsis"></a><h6>
<a name="id609859"></a>
<a href="pop_back.html#fusion.algorithms.transformation.functions.pop_back.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/pop_back.html" title="pop_back"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">pop_back</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">pop_back</span><span class="special">(</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id610016"></a><p class="title"><b>Table<EFBFBD>1.69.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr></tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.pop_back.expression_semantics"></a><h6>
<a name="id610120"></a>
<a href="pop_back.html#fusion.algorithms.transformation.functions.pop_back.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="pop_back.html" title="pop_back"><tt class="computeroutput"><span class="identifier">pop_back</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence containing
all the elements of <tt class="computeroutput"><span class="identifier">seq</span></tt>,
except the last element. The elements in the new sequence are in the
same order as they were in <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithms.transformation.functions.pop_back.complexity"></a><h6>
<a name="id610244"></a>
<a href="pop_back.html#fusion.algorithms.transformation.functions.pop_back.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.pop_back.header"></a><h6>
<a name="id610274"></a>
<a href="pop_back.html#fusion.algorithms.transformation.functions.pop_back.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">pop_back</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.pop_back.example"></a><h6>
<a name="id610382"></a>
<a href="pop_back.html#fusion.algorithms.transformation.functions.pop_back.example">Example</a>
</h6>
<pre class="programlisting">
<span class="identifier">assert</span><span class="special">(</span><span class="identifier">___pop_back__</span><span class="special">(</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">,</span><span class="number">3</span><span class="special">))</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.pop_front"></a><a href="pop_front.html" title="pop_front">pop_front</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.pop_front.description"></a><h6>
<a name="id610558"></a>
<a href="pop_front.html#fusion.algorithms.transformation.functions.pop_front.description">Description</a>
</h6>
<p>
Returns a new sequence, with the first element of the original removed.
</p>
<a name="fusion.algorithms.transformation.functions.pop_front.synopsis"></a><h6>
<a name="id610591"></a>
<a href="pop_front.html#fusion.algorithms.transformation.functions.pop_front.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/pop_front.html" title="pop_front"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">pop_front</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">pop_front</span><span class="special">(</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id610749"></a><p class="title"><b>Table<EFBFBD>1.70.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr></tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.pop_front.expression_semantics"></a><h6>
<a name="id610854"></a>
<a href="pop_front.html#fusion.algorithms.transformation.functions.pop_front.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="pop_front.html" title="pop_front"><tt class="computeroutput"><span class="identifier">pop_front</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence containing
all the elements of <tt class="computeroutput"><span class="identifier">seq</span></tt>,
except the first element. The elements in the new sequence are in the
same order as they were in <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithms.transformation.functions.pop_front.complexity"></a><h6>
<a name="id610977"></a>
<a href="pop_front.html#fusion.algorithms.transformation.functions.pop_front.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.pop_front.header"></a><h6>
<a name="id611007"></a>
<a href="pop_front.html#fusion.algorithms.transformation.functions.pop_front.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">pop_front</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.pop_front.example"></a><h6>
<a name="id611115"></a>
<a href="pop_front.html#fusion.algorithms.transformation.functions.pop_front.example">Example</a>
</h6>
<pre class="programlisting">
<span class="identifier">assert</span><span class="special">(</span><a href="pop_front.html" title="pop_front"><tt class="computeroutput"><span class="identifier">pop_front</span></tt></a><span class="special">(</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">,</span><span class="number">3</span><span class="special">))</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">2</span><span class="special">,</span><span class="number">3</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="pop_back.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="push_back.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>push_back</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.push_back"></a><a href="push_back.html" title="push_back">push_back</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.push_back.description"></a><h6>
<a name="id611299"></a>
<a href="push_back.html#fusion.algorithms.transformation.functions.push_back.description">Description</a>
</h6>
<p>
Returns a new sequence with an element added at the end.
</p>
<a name="fusion.algorithms.transformation.functions.push_back.synopsis"></a><h6>
<a name="id611332"></a>
<a href="push_back.html#fusion.algorithms.transformation.functions.push_back.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">T</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/push_back.html" title="push_back"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">push_back</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">push_back</span><span class="special">(</span>
<span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">T</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">t</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id611542"></a><p class="title"><b>Table<EFBFBD>1.71.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">t</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
The value to add to the end
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.push_back.expression_semantics"></a><h6>
<a name="id611683"></a>
<a href="push_back.html#fusion.algorithms.transformation.functions.push_back.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="push_back.html" title="push_back"><tt class="computeroutput"><span class="identifier">push_back</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">t</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence, containing
all the elements of <tt class="computeroutput"><span class="identifier">seq</span></tt>,
and new element <tt class="computeroutput"><span class="identifier">t</span></tt> appended
to the end. The elements are in the same order as they were in <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithms.transformation.functions.push_back.complexity"></a><h6>
<a name="id611827"></a>
<a href="push_back.html#fusion.algorithms.transformation.functions.push_back.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.push_back.header"></a><h6>
<a name="id611858"></a>
<a href="push_back.html#fusion.algorithms.transformation.functions.push_back.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">push_back</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.push_back.example"></a><h6>
<a name="id611966"></a>
<a href="push_back.html#fusion.algorithms.transformation.functions.push_back.example">Example</a>
</h6>
<pre class="programlisting">
<span class="identifier">assert</span><span class="special">(</span><a href="push_back.html" title="push_back"><tt class="computeroutput"><span class="identifier">push_back</span></tt></a><span class="special">(</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">,</span><span class="number">3</span><span class="special">),</span><span class="number">4</span><span class="special">)</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">,</span><span class="number">3</span><span class="special">,</span><span class="number">4</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="pop_front.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="push_front.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.push_front"></a><a href="push_front.html" title="push_front">push_front</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.push_front.description"></a><h6>
<a name="id612181"></a>
<a href="push_front.html#fusion.algorithms.transformation.functions.push_front.description">Description</a>
</h6>
<p>
Returns a new sequence with an element added at the beginning.
</p>
<a name="fusion.algorithms.transformation.functions.push_front.synopsis"></a><h6>
<a name="id612213"></a>
<a href="push_front.html#fusion.algorithms.transformation.functions.push_front.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">T</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/push_front.html" title="push_front"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">push_front</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">push_front</span><span class="special">(</span>
<span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">T</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">t</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id612423"></a><p class="title"><b>Table<EFBFBD>1.72.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">t</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
The value to add to the beginning
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.push_front.expression_semantics"></a><h6>
<a name="id612563"></a>
<a href="push_front.html#fusion.algorithms.transformation.functions.push_front.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="push_back.html" title="push_back"><tt class="computeroutput"><span class="identifier">push_back</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">t</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence, containing
all the elements of <tt class="computeroutput"><span class="identifier">seq</span></tt>,
and new element <tt class="computeroutput"><span class="identifier">t</span></tt> appended
to the beginning. The elements are in the same order as they were in
<tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithms.transformation.functions.push_front.complexity"></a><h6>
<a name="id612710"></a>
<a href="push_front.html#fusion.algorithms.transformation.functions.push_front.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.push_front.header"></a><h6>
<a name="id612742"></a>
<a href="push_front.html#fusion.algorithms.transformation.functions.push_front.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">push_front</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.push_front.example"></a><h6>
<a name="id612850"></a>
<a href="push_front.html#fusion.algorithms.transformation.functions.push_front.example">Example</a>
</h6>
<pre class="programlisting">
<span class="identifier">assert</span><span class="special">(</span><a href="push_front.html" title="push_front"><tt class="computeroutput"><span class="identifier">push_front</span></tt></a><span class="special">(</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">,</span><span class="number">3</span><span class="special">),</span><span class="number">0</span><span class="special">)</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">0</span><span class="special">,</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">,</span><span class="number">3</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="push_back.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.remove"></a><a href="remove.html" title="remove">remove</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.remove.description"></a><h6>
<a name="id599638"></a>
<a href="remove.html#fusion.algorithms.transformation.functions.remove.description">Description</a>
</h6>
<p>
Returns a new sequence, with all the elements of the original sequence,
except those of a given type.
</p>
<a name="fusion.algorithms.transformation.functions.remove.synopsis"></a><h6>
<a name="id599672"></a>
<a href="remove.html#fusion.algorithms.transformation.functions.remove.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">T</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/remove.html" title="remove"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">remove</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">replace</span><span class="special">(</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id599857"></a><p class="title"><b>Table<EFBFBD>1.59.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">T</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
Type to remove
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.remove.expression_semantics"></a><h6>
<a name="id599996"></a>
<a href="remove.html#fusion.algorithms.transformation.functions.remove.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="remove.html" title="remove"><tt class="computeroutput"><span class="identifier">remove</span></tt></a><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;(</span><span class="identifier">seq</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence, containing
all the elements of <tt class="computeroutput"><span class="identifier">seq</span></tt>,
in their original order, except those of type <tt class="computeroutput"><span class="identifier">T</span></tt>.
Equivalent to <tt class="computeroutput"><a href="remove_if.html" title="remove_if"><tt class="computeroutput"><span class="identifier">remove_if</span></tt></a><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_same</span><span class="special">&lt;</span><span class="identifier">_</span><span class="special">,</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&gt;(</span><span class="identifier">seq</span><span class="special">)</span></tt>.
</p>
<a name="fusion.algorithms.transformation.functions.remove.complexity"></a><h6>
<a name="id600212"></a>
<a href="remove.html#fusion.algorithms.transformation.functions.remove.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.remove.header"></a><h6>
<a name="id600244"></a>
<a href="remove.html#fusion.algorithms.transformation.functions.remove.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">remove</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.remove.example"></a><h6>
<a name="id600352"></a>
<a href="remove.html#fusion.algorithms.transformation.functions.remove.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">const</span> <a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">double</span><span class="special">&gt;</span> <span class="identifier">vec</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2.0</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><a href="remove.html" title="remove"><tt class="computeroutput"><span class="identifier">remove</span></tt></a><span class="special">&lt;</span><span class="keyword">double</span><span class="special">&gt;(</span><span class="identifier">vec</span><span class="special">)</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.remove_if"></a><a href="remove_if.html" title="remove_if">remove_if</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.remove_if.description"></a><h6>
<a name="id600574"></a>
<a href="remove_if.html#fusion.algorithms.transformation.functions.remove_if.description">Description</a>
</h6>
<p>
Returns a new sequence, containing all the elements of the original except
those where a given unary function object evaluates to <tt class="computeroutput"><span class="keyword">true</span></tt>.
</p>
<a name="fusion.algorithms.transformation.functions.remove_if.synopsis"></a><h6>
<a name="id600620"></a>
<a href="remove_if.html#fusion.algorithms.transformation.functions.remove_if.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Pred</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/remove_if.html" title="remove_if"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">remove_if</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">Pred</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">remove_if</span><span class="special">(</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id600806"></a><p class="title"><b>Table<EFBFBD>1.60.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Pred</span></tt>
</p>
</td>
<td>
<p>
A model of unary <a href="http://www.boost.org/libs/mpl/doc/refmanual/lambda-expression.html" target="_top">MPL
Lambda Expression</a>
</p>
</td>
<td>
<p>
Removal predicate
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.remove_if.expression_semantics"></a><h6>
<a name="id600952"></a>
<a href="remove_if.html#fusion.algorithms.transformation.functions.remove_if.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="remove_if.html" title="remove_if"><tt class="computeroutput"><span class="identifier">remove_if</span></tt></a><span class="special">&lt;</span><span class="identifier">Pred</span><span class="special">&gt;(</span><span class="identifier">seq</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence, containing
all the elements of <tt class="computeroutput"><span class="identifier">seq</span></tt>,
in their original order, except those elements with types for which
<tt class="computeroutput"><span class="identifier">Pred</span></tt> evaluates to <tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">true_</span></tt>. Equivalent to <tt class="computeroutput"><a href="filter.html" title="filter"><tt class="computeroutput"><span class="identifier">filter</span></tt></a><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">not_</span><span class="special">&lt;</span><span class="identifier">Pred</span><span class="special">&gt;</span>
<span class="special">&gt;(</span><span class="identifier">seq</span><span class="special">)</span></tt>.
</p>
<a name="fusion.algorithms.transformation.functions.remove_if.complexity"></a><h6>
<a name="id601203"></a>
<a href="remove_if.html#fusion.algorithms.transformation.functions.remove_if.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.remove_if.header"></a><h6>
<a name="id601233"></a>
<a href="remove_if.html#fusion.algorithms.transformation.functions.remove_if.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">remove_if</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.remove_if.example"></a><h6>
<a name="id601341"></a>
<a href="remove_if.html#fusion.algorithms.transformation.functions.remove_if.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">const</span> <a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">double</span><span class="special">&gt;</span> <span class="identifier">vec</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2.0</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><a href="remove_if.html" title="remove_if"><tt class="computeroutput"><span class="identifier">remove_if</span></tt></a><span class="special">&lt;</span><span class="identifier">is_floating_point</span><span class="special">&lt;</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">_</span><span class="special">&gt;</span> <span class="special">&gt;(</span><span class="identifier">vec</span><span class="special">)</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.replace"></a><a href="replace.html" title="replace">replace</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.replace.description"></a><h6>
<a name="id597429"></a>
<a href="replace.html#fusion.algorithms.transformation.functions.replace.description">Description</a>
</h6>
<p>
Replaces each value within a sequence of a given type and value with
a new value.
</p>
<a name="fusion.algorithms.transformation.functions.replace.synopsis"></a><h6>
<a name="id597462"></a>
<a href="replace.html#fusion.algorithms.transformation.functions.replace.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">T</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/replace.html" title="replace"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">replace</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">replace</span><span class="special">(</span>
<span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">T</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">old_value</span><span class="special">,</span> <span class="identifier">T</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">new_value</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id597706"></a><p class="title"><b>Table<EFBFBD>1.57.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>, <tt class="computeroutput"><span class="identifier">e</span> <span class="special">==</span> <span class="identifier">old_value</span></tt>
is a valid expression, convertible to <tt class="computeroutput"><span class="keyword">bool</span></tt>,
for each element <tt class="computeroutput"><span class="identifier">e</span></tt>
in <tt class="computeroutput"><span class="identifier">seq</span></tt> with type
convertible to <tt class="computeroutput"><span class="identifier">T</span></tt>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">old_value</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
Value to replace
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">new_value</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
Replacement value
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.replace.expression_semantics"></a><h6>
<a name="id597954"></a>
<a href="replace.html#fusion.algorithms.transformation.functions.replace.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="replace.html" title="replace"><tt class="computeroutput"><span class="identifier">replace</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">old_value</span><span class="special">,</span> <span class="identifier">new_value</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence with
all the values of <tt class="computeroutput"><span class="identifier">seq</span></tt>
with <tt class="computeroutput"><span class="identifier">new_value</span></tt> assigned
to elements with the same type and equal to <tt class="computeroutput"><span class="identifier">old_value</span></tt>.
</p>
<a name="fusion.algorithms.transformation.functions.replace.complexity"></a><h6>
<a name="id598111"></a>
<a href="replace.html#fusion.algorithms.transformation.functions.replace.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.replace.header"></a><h6>
<a name="id598143"></a>
<a href="replace.html#fusion.algorithms.transformation.functions.replace.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">replace</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.replace.example"></a><h6>
<a name="id598251"></a>
<a href="replace.html#fusion.algorithms.transformation.functions.replace.example">Example</a>
</h6>
<pre class="programlisting">
<span class="identifier">assert</span><span class="special">(</span><a href="replace.html" title="replace"><tt class="computeroutput"><span class="identifier">replace</span></tt></a><span class="special">(</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">),</span> <span class="number">2</span><span class="special">,</span> <span class="number">3</span><span class="special">)</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">3</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
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<html>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>replace_if</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.replace_if"></a><a href="replace_if.html" title="replace_if">replace_if</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.replace_if.description"></a><h6>
<a name="id598449"></a>
<a href="replace_if.html#fusion.algorithms.transformation.functions.replace_if.description">Description</a>
</h6>
<p>
Replaces each element of a given sequence for which an unary function
object evaluates to <tt class="computeroutput"><span class="keyword">true</span></tt>
replaced with a new value.
</p>
<a name="fusion.algorithms.transformation.functions.replace_if.synopsis"></a><h6>
<a name="id598494"></a>
<a href="replace_if.html#fusion.algorithms.transformation.functions.replace_if.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/replace_if.html" title="replace_if"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">replace_if</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">F</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">replace_if</span><span class="special">(</span>
<span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">F</span> <span class="identifier">f</span><span class="special">,</span> <span class="identifier">T</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">new_value</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id598754"></a><p class="title"><b>Table<EFBFBD>1.58.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span></tt>
</p>
</td>
<td>
<p>
A function object for which <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt> is a valid expression, convertible
to <tt class="computeroutput"><span class="keyword">bool</span></tt>, for each
element <tt class="computeroutput"><span class="identifier">e</span></tt> in <tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">new_value</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
Replacement value
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.replace_if.expression_semantics"></a><h6>
<a name="id598994"></a>
<a href="replace_if.html#fusion.algorithms.transformation.functions.replace_if.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="replace_if.html" title="replace_if"><tt class="computeroutput"><span class="identifier">replace_if</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">f</span><span class="special">,</span> <span class="identifier">new_value</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence with
all the elements of <tt class="computeroutput"><span class="identifier">seq</span></tt>,
with <tt class="computeroutput"><span class="identifier">new_value</span></tt> assigned
to each element for which <tt class="computeroutput"><span class="identifier">f</span></tt>
evaluates to <tt class="computeroutput"><span class="keyword">true</span></tt>.
</p>
<a name="fusion.algorithms.transformation.functions.replace_if.complexity"></a><h6>
<a name="id599163"></a>
<a href="replace_if.html#fusion.algorithms.transformation.functions.replace_if.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.replace_if.header"></a><h6>
<a name="id599194"></a>
<a href="replace_if.html#fusion.algorithms.transformation.functions.replace_if.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">replace_if</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.replace_if.example"></a><h6>
<a name="id599302"></a>
<a href="replace_if.html#fusion.algorithms.transformation.functions.replace_if.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">struct</span> <span class="identifier">odd</span>
<span class="special">{</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">T</span> <span class="identifier">t</span><span class="special">)</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">t</span> <span class="special">%</span> <span class="number">2</span><span class="special">;</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="special">...</span>
<span class="identifier">assert</span><span class="special">(</span><a href="replace_if.html" title="replace_if"><tt class="computeroutput"><span class="identifier">replace_if</span></tt></a><span class="special">(</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">),</span> <span class="identifier">odd</span><span class="special">(),</span> <span class="number">3</span><span class="special">)</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">3</span><span class="special">,</span><span class="number">2</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="replace.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="remove.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.reverse"></a><a href="reverse.html" title="reverse">reverse</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.reverse.description"></a><h6>
<a name="id601590"></a>
<a href="reverse.html#fusion.algorithms.transformation.functions.reverse.description">Description</a>
</h6>
<p>
Returns a new sequence with the elements of the original in reverse order.
</p>
<a name="fusion.algorithms.transformation.functions.reverse.synposis"></a><h6>
<a name="id601623"></a>
<a href="reverse.html#fusion.algorithms.transformation.functions.reverse.synposis">Synposis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/reverse.html" title="reverse"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">reverse</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">reverse</span><span class="special">(</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id601782"></a><p class="title"><b>Table<EFBFBD>1.61.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/bidirectional_sequence.html" title="Bidirectional
Sequence">Bidirectional
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr></tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.reverse.expression_semantics"></a><h6>
<a name="id601885"></a>
<a href="reverse.html#fusion.algorithms.transformation.functions.reverse.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="reverse.html" title="reverse"><tt class="computeroutput"><span class="identifier">reverse</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/bidirectional_sequence.html" title="Bidirectional
Sequence">Bidirectional
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence containing
all the elements of <tt class="computeroutput"><span class="identifier">seq</span></tt>
in reverse order.
</p>
<a name="fusion.algorithms.transformation.functions.reverse.complexity"></a><h6>
<a name="id601995"></a>
<a href="reverse.html#fusion.algorithms.transformation.functions.reverse.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.reverse.header"></a><h6>
<a name="id602027"></a>
<a href="reverse.html#fusion.algorithms.transformation.functions.reverse.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">reverse</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.reverse.example"></a><h6>
<a name="id602134"></a>
<a href="reverse.html#fusion.algorithms.transformation.functions.reverse.example">Example</a>
</h6>
<pre class="programlisting">
<span class="identifier">assert</span><span class="special">(</span><a href="reverse.html" title="reverse"><tt class="computeroutput"><span class="identifier">reverse</span></tt></a><span class="special">(</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">,</span><span class="number">3</span><span class="special">))</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">3</span><span class="special">,</span><span class="number">2</span><span class="special">,</span><span class="number">1</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
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<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.transform"></a><a href="transform.html" title="transform">transform</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.transform.description"></a><h6>
<a name="id595437"></a>
<a href="transform.html#fusion.algorithms.transformation.functions.transform.description">Description</a>
</h6>
<p>
For a sequence <tt class="computeroutput"><span class="identifier">seq</span></tt> and
function object or function pointer <tt class="computeroutput"><span class="identifier">f</span></tt>,
<tt class="computeroutput"><span class="identifier">transform</span></tt> returns a new
sequence with elements created by applying <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt> to each element of <tt class="computeroutput"><span class="identifier">e</span></tt>
of <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithms.transformation.functions.transform.unary_version_synopsis"></a><h6>
<a name="id595555"></a>
<a href="transform.html#fusion.algorithms.transformation.functions.transform.unary_version_synopsis">Unary
version synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/transform.html" title="transform"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">transform</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">transform</span><span class="special">(</span>
<span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">F</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id595761"></a><p class="title"><b>Table<EFBFBD>1.55.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span></tt>
</p>
</td>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt>
is a valid expression for each element <tt class="computeroutput"><span class="identifier">e</span></tt>
of <tt class="computeroutput"><span class="identifier">seq</span></tt>. <tt class="computeroutput"><a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top"><tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">result_of</span></tt></a><span class="special">&lt;</span><span class="identifier">F</span><span class="special">(</span><span class="identifier">E</span><span class="special">)&gt;::</span><span class="identifier">type</span></tt> is the return type of <tt class="computeroutput"><span class="identifier">f</span></tt> when called with a value of
each element type <tt class="computeroutput"><span class="identifier">E</span></tt>.
</p>
</td>
<td>
<p>
Transformation function
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.transform.expression_semantics"></a><h6>
<a name="id596034"></a>
<a href="transform.html#fusion.algorithms.transformation.functions.transform.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="transform.html" title="transform"><tt class="computeroutput"><span class="identifier">transform</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence, containing
the return values of <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt> for each element <tt class="computeroutput"><span class="identifier">e</span></tt>
within <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithms.transformation.functions.transform.binary_version_synopsis"></a><h6>
<a name="id596194"></a>
<a href="transform.html#fusion.algorithms.transformation.functions.transform.binary_version_synopsis">Binary
version synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence1</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Sequence2</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/transform.html" title="transform"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">transform</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence1</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">Sequence2</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">transform</span><span class="special">(</span>
<span class="identifier">Sequence1</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq1</span><span class="special">,</span> <span class="identifier">Sequence2</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq2</span><span class="special">,</span> <span class="identifier">F</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id596462"></a><p class="title"><b>Table<EFBFBD>1.56.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq1</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq2</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span></tt>
</p>
</td>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e1</span><span class="special">,</span><span class="identifier">e2</span><span class="special">)</span></tt>
is a valid expression for each pair of elements <tt class="computeroutput"><span class="identifier">e1</span></tt>
of <tt class="computeroutput"><span class="identifier">seq1</span></tt> and <tt class="computeroutput"><span class="identifier">e2</span></tt> of <tt class="computeroutput"><span class="identifier">seq2</span></tt>.
<tt class="computeroutput"><a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top"><tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">result_of</span></tt></a><span class="special">&lt;</span><span class="identifier">F</span><span class="special">(</span><span class="identifier">E1</span><span class="special">,</span><span class="identifier">E2</span><span class="special">)&gt;::</span><span class="identifier">type</span></tt> is the return type of <tt class="computeroutput"><span class="identifier">f</span></tt> when called with elements of
type <tt class="computeroutput"><span class="identifier">E1</span></tt> and <tt class="computeroutput"><span class="identifier">E2</span></tt>
</p>
</td>
<td>
<p>
Transformation function
</p>
</td>
</tr>
</tbody>
</table>
</div>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence, containing
the return values of <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e1</span><span class="special">,</span> <span class="identifier">e2</span><span class="special">)</span></tt> for each pair of elements <tt class="computeroutput"><span class="identifier">e1</span></tt> and <tt class="computeroutput"><span class="identifier">e2</span></tt>
within <tt class="computeroutput"><span class="identifier">seq1</span></tt> and <tt class="computeroutput"><span class="identifier">seq2</span></tt> respectively.
</p>
<a name="fusion.algorithms.transformation.functions.transform.complexity"></a><h6>
<a name="id596949"></a>
<a href="transform.html#fusion.algorithms.transformation.functions.transform.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.transform.header"></a><h6>
<a name="id596980"></a>
<a href="transform.html#fusion.algorithms.transformation.functions.transform.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">transform</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.transform.example"></a><h6>
<a name="id597088"></a>
<a href="transform.html#fusion.algorithms.transformation.functions.transform.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">struct</span> <span class="identifier">triple</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">int</span> <span class="identifier">result_type</span><span class="special">;</span>
<span class="keyword">int</span> <span class="keyword">operator</span><span class="special">()(</span><span class="keyword">int</span> <span class="identifier">t</span><span class="special">)</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">t</span> <span class="special">*</span> <span class="number">3</span><span class="special">;</span>
<span class="special">};</span>
<span class="special">};</span>
<span class="special">...</span>
<span class="identifier">assert</span><span class="special">(</span><a href="transform.html" title="transform"><tt class="computeroutput"><span class="identifier">transform</span></tt></a><span class="special">(</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">,</span><span class="number">3</span><span class="special">),</span> <span class="identifier">triple</span><span class="special">())</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">3</span><span class="special">,</span><span class="number">6</span><span class="special">,</span><span class="number">9</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.functions.zip"></a><a href="zip.html" title="zip">zip</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.functions.zip.description"></a><h6>
<a name="id608584"></a>
<a href="zip.html#fusion.algorithms.transformation.functions.zip.description">Description</a>
</h6>
<p>
Zips sequences together to form a single sequence, whos members are tuples
of the members of the component sequences.
</p>
<a name="fusion.algorithms.transformation.functions.zip.synopsis"></a><h6>
<a name="id608617"></a>
<a href="zip.html#fusion.algorithms.transformation.functions.zip.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence1</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Sequence2</span><span class="special">,</span>
<span class="special">...</span>
<span class="keyword">typename</span> <span class="identifier">SequenceN</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../metafunctions/zip.html" title="zip"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">zip</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence1</span><span class="special">,</span> <span class="identifier">Sequence2</span><span class="special">,</span> <span class="special">...</span> <span class="identifier">SequenceN</span><span class="special">&gt;::</span><span class="identifier">type</span>
<span class="identifier">zip</span><span class="special">(</span><span class="identifier">Sequence1</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq1</span><span class="special">,</span> <span class="identifier">Sequence2</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq2</span><span class="special">,</span> <span class="special">...</span> <span class="identifier">SequenceN</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seqN</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id608902"></a><p class="title"><b>Table<EFBFBD>1.68.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq1</span></tt> to <tt class="computeroutput"><span class="identifier">seqN</span></tt>
</p>
</td>
<td>
<p>
Each sequence is a model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr></tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.functions.zip.expression_semantics"></a><h6>
<a name="id609018"></a>
<a href="zip.html#fusion.algorithms.transformation.functions.zip.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="zip.html" title="zip"><tt class="computeroutput"><span class="identifier">zip</span></tt></a><span class="special">(</span><span class="identifier">seq1</span><span class="special">,</span> <span class="identifier">seq2</span><span class="special">,</span> <span class="special">...</span> <span class="identifier">seqN</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a sequence containing
tuples of elements from sequences <tt class="computeroutput"><span class="identifier">seq1</span></tt>
to <tt class="computeroutput"><span class="identifier">seqN</span></tt>. For example,
applying zip to tuples <tt class="computeroutput"><span class="special">(</span><span class="number">1</span><span class="special">,</span> <span class="number">2</span><span class="special">,</span> <span class="number">3</span><span class="special">)</span></tt>
and <tt class="computeroutput"><span class="special">(</span><span class="char">'a'</span><span class="special">,</span> <span class="char">'b'</span><span class="special">,</span>
<span class="char">'c'</span><span class="special">)</span></tt>
would return <tt class="computeroutput"><span class="special">((</span><span class="number">1</span><span class="special">,</span> <span class="char">'a'</span><span class="special">),(</span><span class="number">2</span><span class="special">,</span> <span class="char">'b'</span><span class="special">),(</span><span class="number">3</span><span class="special">,</span>
<span class="char">'c'</span><span class="special">))</span></tt>
</p>
<a name="fusion.algorithms.transformation.functions.zip.complexity"></a><h6>
<a name="id609327"></a>
<a href="zip.html#fusion.algorithms.transformation.functions.zip.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.functions.zip.header"></a><h6>
<a name="id609359"></a>
<a href="zip.html#fusion.algorithms.transformation.functions.zip.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">zip</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.functions.zip.example"></a><h6>
<a name="id609465"></a>
<a href="zip.html#fusion.algorithms.transformation.functions.zip.example">Example</a>
</h6>
<pre class="programlisting">
<a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">char</span><span class="special">&gt;</span> <span class="identifier">v1</span><span class="special">(</span><span class="number">1</span><span class="special">,</span> <span class="char">'a'</span><span class="special">);</span>
<a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">char</span><span class="special">&gt;</span> <span class="identifier">v2</span><span class="special">(</span><span class="number">2</span><span class="special">,</span> <span class="char">'b'</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><a href="zip.html" title="zip"><tt class="computeroutput"><span class="identifier">zip</span></tt></a><span class="special">(</span><span class="identifier">v1</span><span class="special">,</span> <span class="identifier">v2</span><span class="special">)</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span> <span class="number">2</span><span class="special">),</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="char">'a'</span><span class="special">,</span> <span class="char">'b'</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="join.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../functions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="pop_back.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<div class="titlepage"><div><div><h4 class="title">
<a name="fusion.algorithms.transformation.metafunctions"></a><a href="metafunctions.html" title="Metafunctions">Metafunctions</a></h4></div></div></div>
<div class="toc"><dl>
<dt><span class="section"><a href="metafunctions/filter.html">filter</a></span></dt>
<dt><span class="section"><a href="metafunctions/filter_if.html">filter_if</a></span></dt>
<dt><span class="section"><a href="metafunctions/transform.html">transform</a></span></dt>
<dt><span class="section"><a href="metafunctions/replace.html">replace</a></span></dt>
<dt><span class="section"><a href="metafunctions/replace_if.html">replace_if</a></span></dt>
<dt><span class="section"><a href="metafunctions/remove.html">remove</a></span></dt>
<dt><span class="section"><a href="metafunctions/remove_if.html">remove_if</a></span></dt>
<dt><span class="section"><a href="metafunctions/reverse.html">reverse</a></span></dt>
<dt><span class="section"><a href="metafunctions/clear.html">clear</a></span></dt>
<dt><span class="section"><a href="metafunctions/erase.html">erase</a></span></dt>
<dt><span class="section"><a href="metafunctions/erase_key.html">erase_key</a></span></dt>
<dt><span class="section"><a href="metafunctions/insert.html">insert</a></span></dt>
<dt><span class="section"><a href="metafunctions/insert_range.html">insert_range</a></span></dt>
<dt><span class="section"><a href="metafunctions/join.html">join</a></span></dt>
<dt><span class="section"><a href="metafunctions/zip.html">zip</a></span></dt>
<dt><span class="section"><a href="metafunctions/pop_back.html">pop_back</a></span></dt>
<dt><span class="section"><a href="metafunctions/pop_front.html">pop_front</a></span></dt>
<dt><span class="section"><a href="metafunctions/push_back.html">push_back</a></span></dt>
<dt><span class="section"><a href="metafunctions/push_front.html">push_front</a></span></dt>
</dl></div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>clear</title>
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.clear"></a><a href="clear.html" title="clear">clear</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.clear.description"></a><h6>
<a name="id619772"></a>
<a href="clear.html#fusion.algorithms.transformation.metafunctions.clear.description">Description</a>
</h6>
<p>
Returns the result type of <a href="../functions/clear.html" title="clear"><tt class="computeroutput"><span class="identifier">clear</span></tt></a>, given the input sequence
type.
</p>
<a name="fusion.algorithms.transformation.metafunctions.clear.synopsis"></a><h6>
<a name="id619822"></a>
<a href="clear.html#fusion.algorithms.transformation.metafunctions.clear.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">clear</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id619924"></a><p class="title"><b>Table<EFBFBD>1.82.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr></tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.metafunctions.clear.expression_semantics"></a><h6>
<a name="id620020"></a>
<a href="clear.html#fusion.algorithms.transformation.metafunctions.clear.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="clear.html" title="clear"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">clear</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns an empty sequence.
</p>
<a name="fusion.algorithms.transformation.metafunctions.clear.complexity"></a><h6>
<a name="id620134"></a>
<a href="clear.html#fusion.algorithms.transformation.metafunctions.clear.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.clear.header"></a><h6>
<a name="id620166"></a>
<a href="clear.html#fusion.algorithms.transformation.metafunctions.clear.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">clear</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="reverse.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="erase.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>erase</title>
<link rel="stylesheet" href="../../../../boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.erase"></a><a href="erase.html" title="erase">erase</a></h5></div></div></div>
<p>
Returns the result type of <a href="../functions/erase.html" title="erase"><tt class="computeroutput"><span class="identifier">erase</span></tt></a>, given the input sequence
and range delimiting iterator types.
</p>
<a name="fusion.algorithms.transformation.metafunctions.erase.description"></a><h6>
<a name="id620320"></a>
<a href="erase.html#fusion.algorithms.transformation.metafunctions.erase.description">Description</a>
</h6>
<a name="fusion.algorithms.transformation.metafunctions.erase.synopsis"></a><h6>
<a name="id620347"></a>
<a href="erase.html#fusion.algorithms.transformation.metafunctions.erase.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">It1</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">It2</span> <span class="special">=</span> <span class="emphasis"><em>unspecified</em></span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">erase</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id620493"></a><p class="title"><b>Table<EFBFBD>1.83.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">It1</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../iterators/concepts/forward_iterator.html" title="Forward
Iterator">Forward
Iterator</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">It2</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../iterators/concepts/forward_iterator.html" title="Forward
Iterator">Forward
Iterator</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.metafunctions.erase.expression_semantics"></a><h6>
<a name="id620686"></a>
<a href="erase.html#fusion.algorithms.transformation.metafunctions.erase.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="erase.html" title="erase"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">erase</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">It1</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence with
the element at <tt class="computeroutput"><span class="identifier">It1</span></tt> removed.
</p>
<pre class="programlisting">
<a href="erase.html" title="erase"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">erase</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">It1</span><span class="special">,</span> <span class="identifier">It2</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence with
the elements between <tt class="computeroutput"><span class="identifier">It1</span></tt>
and <tt class="computeroutput"><span class="identifier">It2</span></tt> removed.
</p>
<a name="fusion.algorithms.transformation.metafunctions.erase.complexity"></a><h6>
<a name="id620956"></a>
<a href="erase.html#fusion.algorithms.transformation.metafunctions.erase.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.erase.header"></a><h6>
<a name="id620986"></a>
<a href="erase.html#fusion.algorithms.transformation.metafunctions.erase.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">erase</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="clear.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="erase_key.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>erase_key</title>
<link rel="stylesheet" href="../../../../boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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<td align="center"><a href="../../../../../../../../more/index.htm">More</a></td>
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<hr>
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.erase_key"></a><a href="erase_key.html" title="erase_key">erase_key</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.erase_key.description"></a><h6>
<a name="id621119"></a>
<a href="erase_key.html#fusion.algorithms.transformation.metafunctions.erase_key.description">Description</a>
</h6>
<p>
Returns the result type of <a href="../functions/erase_key.html" title="erase_key"><tt class="computeroutput"><span class="identifier">erase_key</span></tt></a>, given the sequence
and key types.
</p>
<a name="fusion.algorithms.transformation.metafunctions.erase_key.synopsis"></a><h6>
<a name="id621171"></a>
<a href="erase_key.html#fusion.algorithms.transformation.metafunctions.erase_key.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Key</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">erase_key</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id621291"></a><p class="title"><b>Table<EFBFBD>1.84.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/associative_sequence.html" title="Associative
Sequence">Associative
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Key</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
Key type
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.metafunctions.erase_key.expression_semantics"></a><h6>
<a name="id621431"></a>
<a href="erase_key.html#fusion.algorithms.transformation.metafunctions.erase_key.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="erase_key.html" title="erase_key"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">erase_key</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">Key</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/associative_sequence.html" title="Associative
Sequence">Associative
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a sequence with the
elements of <tt class="computeroutput"><span class="identifier">Sequence</span></tt>,
except those with key <tt class="computeroutput"><span class="identifier">Key</span></tt>.
</p>
<a name="fusion.algorithms.transformation.metafunctions.erase_key.complexity"></a><h6>
<a name="id621580"></a>
<a href="erase_key.html#fusion.algorithms.transformation.metafunctions.erase_key.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.erase_key.header"></a><h6>
<a name="id621611"></a>
<a href="erase_key.html#fusion.algorithms.transformation.metafunctions.erase_key.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">erase_key</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="erase.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="insert.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>filter</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.filter"></a><a href="filter.html" title="filter">filter</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.filter.description"></a><h6>
<a name="id613083"></a>
<a href="filter.html#fusion.algorithms.transformation.metafunctions.filter.description">Description</a>
</h6>
<p>
Returns the result type of <a href="../functions/filter.html" title="filter"><tt class="computeroutput"><span class="identifier">filter</span></tt></a> given the sequence type
and type to retain.
</p>
<a name="fusion.algorithms.transformation.metafunctions.filter.synopsis"></a><h6>
<a name="id613133"></a>
<a href="filter.html#fusion.algorithms.transformation.metafunctions.filter.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">T</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">filter</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id613252"></a><p class="title"><b>Table<EFBFBD>1.73.<2E>Parameter</b></p>
<table class="table" summary="Parameter">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">T</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
Type to retain
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.metafunctions.filter.expression_semantics"></a><h6>
<a name="id613393"></a>
<a href="filter.html#fusion.algorithms.transformation.metafunctions.filter.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="filter.html" title="filter"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">filter</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a sequence containing
the elements of <tt class="computeroutput"><span class="identifier">Sequence</span></tt>
that are of type <tt class="computeroutput"><span class="identifier">T</span></tt>. Equivalent
to <tt class="computeroutput"><a href="filter_if.html" title="filter_if"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">filter_if</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span>
<span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_same</span><span class="special">&lt;</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">_</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">type</span></tt>.
</p>
<a name="fusion.algorithms.transformation.metafunctions.filter.complexity"></a><h6>
<a name="id613656"></a>
<a href="filter.html#fusion.algorithms.transformation.metafunctions.filter.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.filter.header"></a><h6>
<a name="id613688"></a>
<a href="filter.html#fusion.algorithms.transformation.metafunctions.filter.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">filter</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="filter_if.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.filter_if"></a><a href="filter_if.html" title="filter_if">filter_if</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.filter_if.description"></a><h6>
<a name="id613818"></a>
<a href="filter_if.html#fusion.algorithms.transformation.metafunctions.filter_if.description">Description</a>
</h6>
<p>
Returns the result type of <a href="../functions/filter_if.html" title="filter_if"><tt class="computeroutput"><span class="identifier">filter_if</span></tt></a> given the sequence
and unary <a href="http://www.boost.org/libs/mpl/doc/refmanual/lambda-expression.html" target="_top">MPL
Lambda Expression</a> predicate type.
</p>
<a name="fusion.algorithms.transformation.metafunctions.filter_if.synopsis"></a><h6>
<a name="id613877"></a>
<a href="filter_if.html#fusion.algorithms.transformation.metafunctions.filter_if.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Pred</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">filter_if</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id613998"></a><p class="title"><b>Table<EFBFBD>1.74.<2E>Parameter</b></p>
<table class="table" summary="Parameter">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Pred</span></tt>
</p>
</td>
<td>
<p>
A unary <a href="http://www.boost.org/libs/mpl/doc/refmanual/lambda-expression.html" target="_top">MPL
Lambda Expression</a>
</p>
</td>
<td>
<p>
Type to retain
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.metafunctions.filter_if.expression_semantics"></a><h6>
<a name="id614143"></a>
<a href="filter_if.html#fusion.algorithms.transformation.metafunctions.filter_if.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="filter_if.html" title="filter_if"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">filter_if</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">Pred</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a sequence containing
the elements of <tt class="computeroutput"><span class="identifier">Sequence</span></tt>
for which <tt class="computeroutput"><span class="identifier">Pred</span></tt> evaluates
to <tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">true_</span></tt>.
</p>
<a name="fusion.algorithms.transformation.metafunctions.filter_if.complexity"></a><h6>
<a name="id614327"></a>
<a href="filter_if.html#fusion.algorithms.transformation.metafunctions.filter_if.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.filter_if.header"></a><h6>
<a name="id614358"></a>
<a href="filter_if.html#fusion.algorithms.transformation.metafunctions.filter_if.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">filter_if</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="filter.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="transform.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>insert</title>
<link rel="stylesheet" href="../../../../boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
<link rel="start" href="../../../../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
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<link rel="next" href="insert_range.html" title="insert_range">
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<table cellpadding="2" width="100%"><tr>
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../../boost.png"></td>
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<td align="center"><a href="../../../../../../../../more/index.htm">More</a></td>
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.insert"></a><a href="insert.html" title="insert">insert</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.insert.description"></a><h6>
<a name="id621744"></a>
<a href="insert.html#fusion.algorithms.transformation.metafunctions.insert.description">Description</a>
</h6>
<p>
Returns the result type of <a href="../functions/insert.html" title="insert"><tt class="computeroutput"><span class="identifier">insert</span></tt></a>, given the sequence,
position iterator and insertion types.
</p>
<a name="fusion.algorithms.transformation.metafunctions.insert.synopsis"></a><h6>
<a name="id621796"></a>
<a href="insert.html#fusion.algorithms.transformation.metafunctions.insert.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Position</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">T</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">insert</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id621933"></a><p class="title"><b>Table<EFBFBD>1.85.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Position</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../iterators/concepts/forward_iterator.html" title="Forward
Iterator">Forward
Iterator</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">T</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.metafunctions.insert.expression_semantics"></a><h6>
<a name="id622119"></a>
<a href="insert.html#fusion.algorithms.transformation.metafunctions.insert.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="insert.html" title="insert"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">insert</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">Position</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a sequence with an
element of type <tt class="computeroutput"><span class="identifier">T</span></tt> inserted
at position <tt class="computeroutput"><span class="identifier">Position</span></tt>
in <tt class="computeroutput"><span class="identifier">Sequence</span></tt>.
</p>
<a name="fusion.algorithms.transformation.metafunctions.insert.complexity"></a><h6>
<a name="id622293"></a>
<a href="insert.html#fusion.algorithms.transformation.metafunctions.insert.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.insert.header"></a><h6>
<a name="id622324"></a>
<a href="insert.html#fusion.algorithms.transformation.metafunctions.insert.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">insert</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="erase_key.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="insert_range.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>insert_range</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.insert_range"></a><a href="insert_range.html" title="insert_range">insert_range</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.insert_range.description"></a><h6>
<a name="id622454"></a>
<a href="insert_range.html#fusion.algorithms.transformation.metafunctions.insert_range.description">Description</a>
</h6>
<p>
Returns the result type of <a href="../functions/insert_range.html" title="insert_range"><tt class="computeroutput"><span class="identifier">insert_range</span></tt></a>, given the input
sequence, position iterator and insertion range types.
</p>
<a name="fusion.algorithms.transformation.metafunctions.insert_range.synopsis"></a><h6>
<a name="id622507"></a>
<a href="insert_range.html#fusion.algorithms.transformation.metafunctions.insert_range.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Position</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Range</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">insert_range</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id622645"></a><p class="title"><b>Table<EFBFBD>1.86.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Position</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../iterators/concepts/forward_iterator.html" title="Forward
Iterator">Forward
Iterator</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Range</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.metafunctions.insert_range.expression_semantics"></a><h6>
<a name="id622840"></a>
<a href="insert_range.html#fusion.algorithms.transformation.metafunctions.insert_range.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="insert_range.html" title="insert_range"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">insert_range</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">Position</span><span class="special">,</span> <span class="identifier">Range</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a sequence with the
elements of <tt class="computeroutput"><span class="identifier">Range</span></tt> inserted
at position <tt class="computeroutput"><span class="identifier">Position</span></tt>
into <tt class="computeroutput"><span class="identifier">Sequence</span></tt>.
</p>
<a name="fusion.algorithms.transformation.metafunctions.insert_range.complexity"></a><h6>
<a name="id623014"></a>
<a href="insert_range.html#fusion.algorithms.transformation.metafunctions.insert_range.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.insert_range.header"></a><h6>
<a name="id623045"></a>
<a href="insert_range.html#fusion.algorithms.transformation.metafunctions.insert_range.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">insert_range</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="insert.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="join.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>join</title>
<link rel="stylesheet" href="../../../../boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
<link rel="start" href="../../../../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.join"></a><a href="join.html" title="join">join</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.join.description"></a><h6>
<a name="id623176"></a>
<a href="join.html#fusion.algorithms.transformation.metafunctions.join.description">Description</a>
</h6>
<p>
Returns the result of joining 2 sequences, given the sequence types.
</p>
<a name="fusion.algorithms.transformation.metafunctions.join.synopsis"></a><h6>
<a name="id623208"></a>
<a href="join.html#fusion.algorithms.transformation.metafunctions.join.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">LhSequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">RhSequence</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">join</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<a name="fusion.algorithms.transformation.metafunctions.join.expression_semantics"></a><h6>
<a name="id623338"></a>
<a href="join.html#fusion.algorithms.transformation.metafunctions.join.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="join.html" title="join"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">join</span></tt></a><span class="special">&lt;</span><span class="identifier">LhSequence</span><span class="special">,</span> <span class="identifier">RhSequence</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a sequence containing
the elements of <tt class="computeroutput"><span class="identifier">LhSequence</span></tt>
followed by the elements of <tt class="computeroutput"><span class="identifier">RhSequence</span></tt>.
The order of the elements in the 2 sequences is preserved.
</p>
<a name="fusion.algorithms.transformation.metafunctions.join.complexity"></a><h6>
<a name="id623488"></a>
<a href="join.html#fusion.algorithms.transformation.metafunctions.join.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.join.header"></a><h6>
<a name="id623519"></a>
<a href="join.html#fusion.algorithms.transformation.metafunctions.join.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">join</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="insert_range.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="zip.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>pop_back</title>
<link rel="stylesheet" href="../../../../boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
<link rel="start" href="../../../../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
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<link rel="next" href="pop_front.html" title="pop_front">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.pop_back"></a><a href="pop_back.html" title="pop_back">pop_back</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.pop_back.description"></a><h6>
<a name="id624310"></a>
<a href="pop_back.html#fusion.algorithms.transformation.metafunctions.pop_back.description">Description</a>
</h6>
<p>
Returns the result type of <a href="../functions/pop_back.html" title="pop_back"><tt class="computeroutput"><span class="identifier">pop_back</span></tt></a>, given the input sequence
type.
</p>
<a name="fusion.algorithms.transformation.metafunctions.pop_back.synopsis"></a><h6>
<a name="id625180"></a>
<a href="pop_back.html#fusion.algorithms.transformation.metafunctions.pop_back.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">pop_back</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id387555"></a><p class="title"><b>Table<EFBFBD>1.87.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr></tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.metafunctions.pop_back.expression_semantics"></a><h6>
<a name="id385622"></a>
<a href="pop_back.html#fusion.algorithms.transformation.metafunctions.pop_back.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="pop_back.html" title="pop_back"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">pop_back</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a sequence with all
the elements of <tt class="computeroutput"><span class="identifier">Sequence</span></tt>
except the last element.
</p>
<a name="fusion.algorithms.transformation.metafunctions.pop_back.complexity"></a><h6>
<a name="id626099"></a>
<a href="pop_back.html#fusion.algorithms.transformation.metafunctions.pop_back.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.pop_back.header"></a><h6>
<a name="id626126"></a>
<a href="pop_back.html#fusion.algorithms.transformation.metafunctions.pop_back.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">tranformation</span><span class="special">/</span><span class="identifier">pop_back</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="zip.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="pop_front.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
<head>
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<title>pop_front</title>
<link rel="stylesheet" href="../../../../boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.pop_front"></a><a href="pop_front.html" title="pop_front">pop_front</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.pop_front.description"></a><h6>
<a name="id626241"></a>
<a href="pop_front.html#fusion.algorithms.transformation.metafunctions.pop_front.description">Description</a>
</h6>
<p>
Returns the result type of <a href="../functions/pop_front.html" title="pop_front"><tt class="computeroutput"><span class="identifier">pop_front</span></tt></a>, given the input sequence
type.
</p>
<a name="fusion.algorithms.transformation.metafunctions.pop_front.synopsis"></a><h6>
<a name="id626286"></a>
<a href="pop_front.html#fusion.algorithms.transformation.metafunctions.pop_front.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">pop_front</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id626378"></a><p class="title"><b>Table<EFBFBD>1.88.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr></tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.metafunctions.pop_front.expression_semantics"></a><h6>
<a name="id626477"></a>
<a href="pop_front.html#fusion.algorithms.transformation.metafunctions.pop_front.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="pop_front.html" title="pop_front"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">pop_front</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a sequence with all
the elements of <tt class="computeroutput"><span class="identifier">Sequence</span></tt>
except the first element.
</p>
<a name="fusion.algorithms.transformation.metafunctions.pop_front.complexity"></a><h6>
<a name="id626590"></a>
<a href="pop_front.html#fusion.algorithms.transformation.metafunctions.pop_front.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.pop_front.header"></a><h6>
<a name="id626617"></a>
<a href="pop_front.html#fusion.algorithms.transformation.metafunctions.pop_front.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">pop_front</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="pop_back.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="push_back.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>push_back</title>
<link rel="stylesheet" href="../../../../boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
<link rel="start" href="../../../../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
<link rel="up" href="../metafunctions.html" title="Metafunctions">
<link rel="prev" href="pop_front.html" title="pop_front">
<link rel="next" href="push_front.html" title="push_front">
</head>
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<table cellpadding="2" width="100%"><tr>
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<div class="spirit-nav">
<a accesskey="p" href="pop_front.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="push_front.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.push_back"></a><a href="push_back.html" title="push_back">push_back</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.push_back.description"></a><h6>
<a name="id626733"></a>
<a href="push_back.html#fusion.algorithms.transformation.metafunctions.push_back.description">Description</a>
</h6>
<p>
Returns the result type of <a href="../functions/push_back.html" title="push_back"><tt class="computeroutput"><span class="identifier">push_back</span></tt></a>, given the types of
the input sequence and element to push.
</p>
<a name="fusion.algorithms.transformation.metafunctions.push_back.synopsis"></a><h6>
<a name="id626779"></a>
<a href="push_back.html#fusion.algorithms.transformation.metafunctions.push_back.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">T</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">push_back</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id626887"></a><p class="title"><b>Table<EFBFBD>1.89.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">T</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.metafunctions.push_back.expression_semantics"></a><h6>
<a name="id627022"></a>
<a href="push_back.html#fusion.algorithms.transformation.metafunctions.push_back.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="push_back.html" title="push_back"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">push_back</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a sequence with the
elements of <tt class="computeroutput"><span class="identifier">Sequence</span></tt>
and an element of type <tt class="computeroutput"><span class="identifier">T</span></tt>
added to the end.
</p>
<a name="fusion.algorithms.transformation.metafunctions.push_back.complexity"></a><h6>
<a name="id627154"></a>
<a href="push_back.html#fusion.algorithms.transformation.metafunctions.push_back.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.push_back.header"></a><h6>
<a name="id627181"></a>
<a href="push_back.html#fusion.algorithms.transformation.metafunctions.push_back.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">push_back</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="pop_front.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="push_front.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<title>push_front</title>
<link rel="stylesheet" href="../../../../boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
<link rel="start" href="../../../../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
<link rel="up" href="../metafunctions.html" title="Metafunctions">
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<table cellpadding="2" width="100%"><tr>
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../../boost.png"></td>
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.push_front"></a><a href="push_front.html" title="push_front">push_front</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.push_front.description"></a><h6>
<a name="id627296"></a>
<a href="push_front.html#fusion.algorithms.transformation.metafunctions.push_front.description">Description</a>
</h6>
<p>
Returns the result type of <a href="../functions/push_front.html" title="push_front"><tt class="computeroutput"><span class="identifier">push_front</span></tt></a>, given the types
of the input sequence and element to push.
</p>
<a name="fusion.algorithms.transformation.metafunctions.push_front.synopsis"></a><h6>
<a name="id627343"></a>
<a href="push_front.html#fusion.algorithms.transformation.metafunctions.push_front.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">T</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">push_front</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id627451"></a><p class="title"><b>Table<EFBFBD>1.90.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">T</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.metafunctions.push_front.expression_semantics"></a><h6>
<a name="id627585"></a>
<a href="push_front.html#fusion.algorithms.transformation.metafunctions.push_front.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="push_front.html" title="push_front"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">push_front</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a sequence with the
elements of <tt class="computeroutput"><span class="identifier">Sequence</span></tt>
and an element of type <tt class="computeroutput"><span class="identifier">T</span></tt>
added to the beginning.
</p>
<a name="fusion.algorithms.transformation.metafunctions.push_front.complexity"></a><h6>
<a name="id627717"></a>
<a href="push_front.html#fusion.algorithms.transformation.metafunctions.push_front.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.push_front.header"></a><h6>
<a name="id627744"></a>
<a href="push_front.html#fusion.algorithms.transformation.metafunctions.push_front.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">push_front</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="push_back.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="../../../tuples.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>remove</title>
<link rel="stylesheet" href="../../../../boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
<link rel="start" href="../../../../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
<link rel="up" href="../metafunctions.html" title="Metafunctions">
<link rel="prev" href="replace_if.html" title="replace_if">
<link rel="next" href="remove_if.html" title="remove_if">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.remove"></a><a href="remove.html" title="remove">remove</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.remove.description"></a><h6>
<a name="id617791"></a>
<a href="remove.html#fusion.algorithms.transformation.metafunctions.remove.description">Description</a>
</h6>
<p>
Returns the result type of <a href="../functions/remove.html" title="remove"><tt class="computeroutput"><span class="identifier">remove</span></tt></a>, given the sequence and
removal types.
</p>
<a name="fusion.algorithms.transformation.metafunctions.remove.synopsis"></a><h6>
<a name="id617843"></a>
<a href="remove.html#fusion.algorithms.transformation.metafunctions.remove.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">T</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">remove</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id617962"></a><p class="title"><b>Table<EFBFBD>1.79.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">T</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
Remove elements of this type
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.metafunctions.remove.expression_semantics"></a><h6>
<a name="id618101"></a>
<a href="remove.html#fusion.algorithms.transformation.metafunctions.remove.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="remove.html" title="remove"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">remove</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a sequence containing
the elements of <tt class="computeroutput"><span class="identifier">Sequence</span></tt>
not of type <tt class="computeroutput"><span class="identifier">T</span></tt>. Equivalent
to <tt class="computeroutput"><a href="replace_if.html" title="replace_if"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">replace_if</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span>
<span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_same</span><span class="special">&lt;</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">_</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">type</span></tt>.
</p>
<a name="fusion.algorithms.transformation.metafunctions.remove.complexity"></a><h6>
<a name="id618364"></a>
<a href="remove.html#fusion.algorithms.transformation.metafunctions.remove.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.remove.header"></a><h6>
<a name="id618395"></a>
<a href="remove.html#fusion.algorithms.transformation.metafunctions.remove.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">remove</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="replace_if.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="remove_if.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.remove_if"></a><a href="remove_if.html" title="remove_if">remove_if</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.remove_if.description"></a><h6>
<a name="id618525"></a>
<a href="remove_if.html#fusion.algorithms.transformation.metafunctions.remove_if.description">Description</a>
</h6>
<p>
Returns the result type of <a href="../functions/remove_if.html" title="remove_if"><tt class="computeroutput"><span class="identifier">remove_if</span></tt></a>, given the input sequence
and unary <a href="http://www.boost.org/libs/mpl/doc/refmanual/lambda-expression.html" target="_top">MPL
Lambda Expression</a> predicate types.
</p>
<a name="fusion.algorithms.transformation.metafunctions.remove_if.synopsis"></a><h6>
<a name="id618583"></a>
<a href="remove_if.html#fusion.algorithms.transformation.metafunctions.remove_if.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Pred</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">remove_if</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id618704"></a><p class="title"><b>Table<EFBFBD>1.80.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Pred</span></tt>
</p>
</td>
<td>
<p>
A model of unary <a href="http://www.boost.org/libs/mpl/doc/refmanual/lambda-expression.html" target="_top">MPL
Lambda Expression</a>
</p>
</td>
<td>
<p>
Remove elements which evaluate to <tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">true_</span></tt>
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.metafunctions.remove_if.expression_semantics"></a><h6>
<a name="id618882"></a>
<a href="remove_if.html#fusion.algorithms.transformation.metafunctions.remove_if.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="remove_if.html" title="remove_if"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">remove_if</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">Pred</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a sequence containing
the elements of <tt class="computeroutput"><span class="identifier">Sequence</span></tt>
for which <tt class="computeroutput"><span class="identifier">Pred</span></tt> evaluates
to <tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">false_</span></tt>.
</p>
<a name="fusion.algorithms.transformation.metafunctions.remove_if.complexity"></a><h6>
<a name="id619066"></a>
<a href="remove_if.html#fusion.algorithms.transformation.metafunctions.remove_if.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.remove_if.header"></a><h6>
<a name="id619097"></a>
<a href="remove_if.html#fusion.algorithms.transformation.metafunctions.remove_if.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">remove_if</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="remove.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="reverse.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>replace</title>
<link rel="stylesheet" href="../../../../boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
<link rel="start" href="../../../../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.replace"></a><a href="replace.html" title="replace">replace</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.replace.description"></a><h6>
<a name="id616479"></a>
<a href="replace.html#fusion.algorithms.transformation.metafunctions.replace.description">Description</a>
</h6>
<p>
Returns the result type of <a href="../functions/replace.html" title="replace"><tt class="computeroutput"><span class="identifier">replace</span></tt></a>, given the types of
the input sequence and element to replace.
</p>
<a name="fusion.algorithms.transformation.metafunctions.replace.synopsis"></a><h6>
<a name="id616530"></a>
<a href="replace.html#fusion.algorithms.transformation.metafunctions.replace.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">T</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">replace</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id616649"></a><p class="title"><b>Table<EFBFBD>1.77.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">T</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
The type of the search and replacement objects
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.metafunctions.replace.expression_semantics"></a><h6>
<a name="id616791"></a>
<a href="replace.html#fusion.algorithms.transformation.metafunctions.replace.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="replace.html" title="replace"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">replace</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span><span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns the return type of
<a href="../functions/replace.html" title="replace"><tt class="computeroutput"><span class="identifier">replace</span></tt></a>.
</p>
<a name="fusion.algorithms.transformation.metafunctions.replace.complexity"></a><h6>
<a name="id616934"></a>
<a href="replace.html#fusion.algorithms.transformation.metafunctions.replace.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.replace.header"></a><h6>
<a name="id616965"></a>
<a href="replace.html#fusion.algorithms.transformation.metafunctions.replace.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">replace</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="transform.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="replace_if.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
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<link rel="next" href="remove.html" title="remove">
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<table cellpadding="2" width="100%"><tr>
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.replace_if"></a><a href="replace_if.html" title="replace_if">replace_if</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.replace_if.description"></a><h6>
<a name="id617095"></a>
<a href="replace_if.html#fusion.algorithms.transformation.metafunctions.replace_if.description">Description</a>
</h6>
<p>
Returns the result type of <a href="../functions/replace_if.html" title="replace_if"><tt class="computeroutput"><span class="identifier">replace_if</span></tt></a>, given the types
of the sequence, <a href="../../../functional/concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a> predicate and replacement object.
</p>
<a name="fusion.algorithms.transformation.metafunctions.replace_if.synopsis"></a><h6>
<a name="id617155"></a>
<a href="replace_if.html#fusion.algorithms.transformation.metafunctions.replace_if.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">replace_if</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id617292"></a><p class="title"><b>Table<EFBFBD>1.78.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">F</span></tt>
</p>
</td>
<td>
<p>
A model of unary <a href="../../../functional/concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a>
</p>
</td>
<td>
<p>
Replacement predicate
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">T</span></tt>
</p>
</td>
<td>
<p>
Any type
</p>
</td>
<td>
<p>
The type of the replacement object
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.metafunctions.replace_if.expression_semantics"></a><h6>
<a name="id617476"></a>
<a href="replace_if.html#fusion.algorithms.transformation.metafunctions.replace_if.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="replace_if.html" title="replace_if"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">replace_if</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span><span class="identifier">F</span><span class="special">,</span><span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns the return type of
<a href="../functions/replace_if.html" title="replace_if"><tt class="computeroutput"><span class="identifier">replace_if</span></tt></a>.
</p>
<a name="fusion.algorithms.transformation.metafunctions.replace_if.complexity"></a><h6>
<a name="id617630"></a>
<a href="replace_if.html#fusion.algorithms.transformation.metafunctions.replace_if.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.replace_if.header"></a><h6>
<a name="id617661"></a>
<a href="replace_if.html#fusion.algorithms.transformation.metafunctions.replace_if.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">replace_if</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="replace.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="remove.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.reverse"></a><a href="reverse.html" title="reverse">reverse</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.reverse.description"></a><h6>
<a name="id619227"></a>
<a href="reverse.html#fusion.algorithms.transformation.metafunctions.reverse.description">Description</a>
</h6>
<p>
Returns the result type of <a href="../functions/reverse.html" title="reverse"><tt class="computeroutput"><span class="identifier">reverse</span></tt></a>, given the input sequence
type.
</p>
<a name="fusion.algorithms.transformation.metafunctions.reverse.synopsis"></a><h6>
<a name="id619278"></a>
<a href="reverse.html#fusion.algorithms.transformation.metafunctions.reverse.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">reverse</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<div class="table">
<a name="id619380"></a><p class="title"><b>Table<EFBFBD>1.81.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/bidirectional_sequence.html" title="Bidirectional
Sequence">Bidirectional
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr></tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.metafunctions.reverse.expression_semantics"></a><h6>
<a name="id619485"></a>
<a href="reverse.html#fusion.algorithms.transformation.metafunctions.reverse.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="reverse.html" title="reverse"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">reverse</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/bidirectional_sequence.html" title="Bidirectional
Sequence">Bidirectional
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a sequence with the
elements in the reverse order to <tt class="computeroutput"><span class="identifier">Sequence</span></tt>.
</p>
<a name="fusion.algorithms.transformation.metafunctions.reverse.complexity"></a><h6>
<a name="id619611"></a>
<a href="reverse.html#fusion.algorithms.transformation.metafunctions.reverse.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.reverse.header"></a><h6>
<a name="id619642"></a>
<a href="reverse.html#fusion.algorithms.transformation.metafunctions.reverse.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">reverse</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="remove_if.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="clear.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<html>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>transform</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.66.1">
<link rel="start" href="../../../../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
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<table cellpadding="2" width="100%"><tr>
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.transform"></a><a href="transform.html" title="transform">transform</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.transform.description"></a><h6>
<a name="id614488"></a>
<a href="transform.html#fusion.algorithms.transformation.metafunctions.transform.description">Description</a>
</h6>
<p>
For a sequence <tt class="computeroutput"><span class="identifier">seq</span></tt> and
function object or function pointer <tt class="computeroutput"><span class="identifier">f</span></tt>,
<tt class="computeroutput"><span class="identifier">transform</span></tt> returns a new
sequence with elements created by applying <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt> to each element of <tt class="computeroutput"><span class="identifier">e</span></tt>
of <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithms.transformation.metafunctions.transform.unary_version_synopsis"></a><h6>
<a name="id614606"></a>
<a href="transform.html#fusion.algorithms.transformation.metafunctions.transform.unary_version_synopsis">Unary
version synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="transform.html" title="transform"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">transform</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">transform</span><span class="special">(</span>
<span class="identifier">Sequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">,</span> <span class="identifier">F</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id614810"></a><p class="title"><b>Table<EFBFBD>1.75.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span></tt>
</p>
</td>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt>
is a valid expression for each element <tt class="computeroutput"><span class="identifier">e</span></tt>
of <tt class="computeroutput"><span class="identifier">seq</span></tt>. <tt class="computeroutput"><a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top"><tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">result_of</span></tt></a><span class="special">&lt;</span><span class="identifier">F</span><span class="special">(</span><span class="identifier">E</span><span class="special">)&gt;::</span><span class="identifier">type</span></tt> is the return type of <tt class="computeroutput"><span class="identifier">f</span></tt> when called with a value of
each element type <tt class="computeroutput"><span class="identifier">E</span></tt>.
</p>
</td>
<td>
<p>
Transformation function
</p>
</td>
</tr>
</tbody>
</table>
</div>
<a name="fusion.algorithms.transformation.metafunctions.transform.expression_semantics"></a><h6>
<a name="id615083"></a>
<a href="transform.html#fusion.algorithms.transformation.metafunctions.transform.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="../functions/transform.html" title="transform"><tt class="computeroutput"><span class="identifier">transform</span></tt></a><span class="special">(</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence, containing
the return values of <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e</span><span class="special">)</span></tt> for each element <tt class="computeroutput"><span class="identifier">e</span></tt>
within <tt class="computeroutput"><span class="identifier">seq</span></tt>.
</p>
<a name="fusion.algorithms.transformation.metafunctions.transform.binary_version_synopsis"></a><h6>
<a name="id615244"></a>
<a href="transform.html#fusion.algorithms.transformation.metafunctions.transform.binary_version_synopsis">Binary
version synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence1</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Sequence2</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">F</span>
<span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="transform.html" title="transform"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">transform</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence1</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">Sequence2</span> <span class="keyword">const</span><span class="special">,</span> <span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">transform</span><span class="special">(</span>
<span class="identifier">Sequence1</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq1</span><span class="special">,</span> <span class="identifier">Sequence2</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">seq2</span><span class="special">,</span> <span class="identifier">F</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<div class="table">
<a name="id615512"></a><p class="title"><b>Table<EFBFBD>1.76.<2E>Parameters</b></p>
<table class="table" summary="Parameters">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq1</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">seq2</span></tt>
</p>
</td>
<td>
<p>
A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>
</p>
</td>
<td>
<p>
Operation's argument
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span></tt>
</p>
</td>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e1</span><span class="special">,</span><span class="identifier">e2</span><span class="special">)</span></tt>
is a valid expression for each pair of elements <tt class="computeroutput"><span class="identifier">e1</span></tt>
of <tt class="computeroutput"><span class="identifier">seq1</span></tt> and <tt class="computeroutput"><span class="identifier">e2</span></tt> of <tt class="computeroutput"><span class="identifier">seq2</span></tt>.
<tt class="computeroutput"><a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top"><tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">result_of</span></tt></a><span class="special">&lt;</span><span class="identifier">F</span><span class="special">(</span><span class="identifier">E1</span><span class="special">,</span><span class="identifier">E2</span><span class="special">)&gt;::</span><span class="identifier">type</span></tt> is the return type of <tt class="computeroutput"><span class="identifier">f</span></tt> when called with elements of
type <tt class="computeroutput"><span class="identifier">E1</span></tt> and <tt class="computeroutput"><span class="identifier">E2</span></tt>
</p>
</td>
<td>
<p>
Transformation function
</p>
</td>
</tr>
</tbody>
</table>
</div>
<p>
<span class="bold"><b>Return type</b></span>: A model of <a href="../../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a new sequence, containing
the return values of <tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">e1</span><span class="special">,</span> <span class="identifier">e2</span><span class="special">)</span></tt> for each pair of elements <tt class="computeroutput"><span class="identifier">e1</span></tt> and <tt class="computeroutput"><span class="identifier">e2</span></tt>
within <tt class="computeroutput"><span class="identifier">seq1</span></tt> and <tt class="computeroutput"><span class="identifier">seq2</span></tt> respectively.
</p>
<a name="fusion.algorithms.transformation.metafunctions.transform.complexity"></a><h6>
<a name="id616001"></a>
<a href="transform.html#fusion.algorithms.transformation.metafunctions.transform.complexity">Complexity</a>
</h6>
<p>
Constant. Returns a view which is lazily evaluated.
</p>
<a name="fusion.algorithms.transformation.metafunctions.transform.header"></a><h6>
<a name="id616032"></a>
<a href="transform.html#fusion.algorithms.transformation.metafunctions.transform.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">transform</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.algorithms.transformation.metafunctions.transform.example"></a><h6>
<a name="id616140"></a>
<a href="transform.html#fusion.algorithms.transformation.metafunctions.transform.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">struct</span> <span class="identifier">triple</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">int</span> <span class="identifier">result_type</span><span class="special">;</span>
<span class="keyword">int</span> <span class="keyword">operator</span><span class="special">()(</span><span class="keyword">int</span> <span class="identifier">t</span><span class="special">)</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">t</span> <span class="special">*</span> <span class="number">3</span><span class="special">;</span>
<span class="special">};</span>
<span class="special">};</span>
<span class="special">...</span>
<span class="identifier">assert</span><span class="special">(</span><a href="../functions/transform.html" title="transform"><tt class="computeroutput"><span class="identifier">transform</span></tt></a><span class="special">(</span><a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2</span><span class="special">,</span><span class="number">3</span><span class="special">),</span> <span class="identifier">triple</span><span class="special">())</span> <span class="special">==</span> <a href="../../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">3</span><span class="special">,</span><span class="number">6</span><span class="special">,</span><span class="number">9</span><span class="special">));</span>
</pre>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="filter_if.html"><img src="../../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../metafunctions.html"><img src="../../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="replace.html"><img src="../../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.algorithms.transformation.metafunctions.zip"></a><a href="zip.html" title="zip">zip</a></h5></div></div></div>
<a name="fusion.algorithms.transformation.metafunctions.zip.description"></a><h6>
<a name="id623648"></a>
<a href="zip.html#fusion.algorithms.transformation.metafunctions.zip.description">Description</a>
</h6>
<p>
Zips sequences together to form a single sequence, whos members are tuples
of the members of the component sequences.
</p>
<a name="fusion.algorithms.transformation.metafunctions.zip.synopsis"></a><h6>
<a name="id623681"></a>
<a href="zip.html#fusion.algorithms.transformation.metafunctions.zip.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">Sequence1</span><span class="special">,</span>
<span class="keyword">typename</span> <span class="identifier">Sequence2</span><span class="special">,</span>
<span class="special">...</span>
<span class="keyword">typename</span> <span class="identifier">SequenceN</span>
<span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">zip</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="emphasis"><em>unspecified</em></span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<a name="fusion.algorithms.transformation.metafunctions.zip.expression_semantics"></a><h6>
<a name="id623835"></a>
<a href="zip.html#fusion.algorithms.transformation.metafunctions.zip.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<a href="zip.html" title="zip"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">zip</span></tt></a><span class="special">&lt;</span><span class="identifier">Sequence1</span><span class="special">,</span> <span class="identifier">Sequence2</span><span class="special">,</span> <span class="special">...</span> <span class="identifier">SequenceN</span><span class="special">&gt;::</span><span class="identifier">type</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A model of the most restrictive
traversal category of sequences <tt class="computeroutput"><span class="identifier">Sequence1</span></tt>
to <tt class="computeroutput"><span class="identifier">SequenceN</span></tt>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Return a sequence containing
tuples of elements from each sequence. For example, applying zip to tuples
<tt class="computeroutput"><span class="special">(</span><span class="number">1</span><span class="special">,</span> <span class="number">2</span><span class="special">,</span>
<span class="number">3</span><span class="special">)</span></tt>
and <tt class="computeroutput"><span class="special">(</span><span class="char">'a'</span><span class="special">,</span> <span class="char">'b'</span><span class="special">,</span>
<span class="char">'c'</span><span class="special">)</span></tt>
would return <tt class="computeroutput"><span class="special">((</span><span class="number">1</span><span class="special">,</span> <span class="char">'a'</span><span class="special">),(</span><span class="number">2</span><span class="special">,</span> <span class="char">'b'</span><span class="special">),(</span><span class="number">3</span><span class="special">,</span>
<span class="char">'c'</span><span class="special">))</span></tt>
</p>
<a name="fusion.algorithms.transformation.metafunctions.zip.complexity"></a><h6>
<a name="id624151"></a>
<a href="zip.html#fusion.algorithms.transformation.metafunctions.zip.complexity">Complexity</a>
</h6>
<p>
Constant.
</p>
<a name="fusion.algorithms.transformation.metafunctions.zip.header"></a><h6>
<a name="id624182"></a>
<a href="zip.html#fusion.algorithms.transformation.metafunctions.zip.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">transformation</span><span class="special">/</span><span class="identifier">zip</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
</div>
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<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
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<div class="section" lang="en">
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<p>
This section summarizes significant changes to the Fusion library.
</p>
<div class="itemizedlist"><ul type="disc">
<li>
Sep 27, 2006: Added <tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">tuple</span></tt>
support.
</li>
<li>
Nov 17, 2006: Added <tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">variant</span></tt>
support.
</li>
<li>
Feb 15, 2007: Added functional module.
</li>
</ul></div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
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<link rel="start" href="../index.html" title="Chapter<65>1.<2E>Fusion 2.0">
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="fusion.extension"></a><a href="extension.html" title="Extension">Extension</a></h2></div></div></div>
<p>
The Fusion library is designed to be extensible, new sequences types can easily
be added. In fact, the library support for <tt class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span></tt>,
<tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">array</span></tt> and <a href="http://www.boost.org/libs/mpl/index.html" target="_top">MPL</a>
sequences is entirely provided using the extension mechanism.
</p>
<p>
The process for adding a new sequence type to Fusion is:
</p>
<div class="orderedlist"><ol type="1">
<li>
Enable the <a href="notes.html#fusion.notes.tag_dispatching"><span class="emphasis"><em>tag dispatching</em></span></a>
mechanism used by Fusion for your sequence type
</li>
<li>
Design an iterator type for the sequence
</li>
<li>
Provide specialized behaviour for the intrinsic operations of the new Fusion
sequence
</li>
</ol></div>
<a name="fusion.extension.our_example"></a><h3>
<a name="id635063"></a>
<a href="extension.html#fusion.extension.our_example">Our example</a>
</h3>
<p>
In order to illustrate enabling a new sequence type for use with Fusion, we
are going to use the type:
</p>
<pre class="programlisting">
<span class="keyword">namespace</span> <span class="identifier">example</span>
<span class="special">{</span>
<span class="keyword">struct</span> <span class="identifier">example_struct</span>
<span class="special">{</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">name</span><span class="special">;</span>
<span class="keyword">int</span> <span class="identifier">age</span><span class="special">;</span>
<span class="identifier">example_struct</span><span class="special">(</span>
<span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">&amp;</span> <span class="identifier">n</span><span class="special">,</span>
<span class="keyword">int</span> <span class="identifier">a</span><span class="special">)</span>
<span class="special">:</span> <span class="identifier">name</span><span class="special">(</span><span class="identifier">n</span><span class="special">),</span> <span class="identifier">age</span><span class="special">(</span><span class="identifier">a</span><span class="special">)</span>
<span class="special">{}</span>
<span class="special">};</span>
<span class="special">}</span>
</pre>
<p>
We are going to pretend that this type has been provided by a 3rd party library,
and therefore cannot be modified. We shall work through all the necessary steps
to enable <tt class="computeroutput"><span class="identifier">example_struct</span></tt> to
serve as an <a href="sequences/concepts/associative_sequence.html" title="Associative
Sequence">Associative
Sequence</a> as described in the <a href="quick_start.html" title="Quick Start">Quick
Start</a> guide.
</p>
<a name="fusion.extension.enabling_tag_dispatching"></a><h3>
<a name="id635347"></a>
<a href="extension.html#fusion.extension.enabling_tag_dispatching">Enabling Tag Dispatching</a>
</h3>
<p>
The Fusion extensibility mechanism uses <a href="notes.html#fusion.notes.tag_dispatching"><span class="emphasis"><em>tag
dispatching</em></span></a> to call the correct code for a given sequence
type. In order to exploit the tag dispatching mechanism we must first declare
a new tag type for the mechanism to use. For example:
</p>
<pre class="programlisting">
<span class="keyword">namespace</span> <span class="identifier">example</span> <span class="special">{</span>
<span class="keyword">struct</span> <span class="identifier">example_sequence_tag</span><span class="special">;</span> <span class="comment">// Only definition needed
</span><span class="special">}</span>
</pre>
<p>
Next we need to enable the <tt class="computeroutput"><span class="identifier">traits</span><span class="special">::</span><span class="identifier">tag_of</span></tt>
metafunction to return our newly chosen tag type for operations involving our
sequence. This is done by specializing <tt class="computeroutput"><span class="identifier">traits</span><span class="special">::</span><span class="identifier">tag_of</span></tt>
for our sequence type.
</p>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">support</span><span class="special">/</span><span class="identifier">tag_of_fwd</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
<span class="keyword">namespace</span> <span class="identifier">boost</span> <span class="special">{</span> <span class="keyword">namespace</span> <span class="identifier">fusion</span> <span class="special">{</span> <span class="keyword">namespace</span> <span class="identifier">traits</span> <span class="special">{</span>
<span class="keyword">template</span><span class="special">&lt;&gt;</span>
<span class="keyword">struct</span> <span class="identifier">tag_of</span><span class="special">&lt;</span><span class="identifier">example_struct</span><span class="special">&gt;</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="identifier">example</span><span class="special">::</span><span class="identifier">example_sequence_tag</span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
<span class="special">}}}</span>
</pre>
<p>
<tt class="computeroutput"><span class="identifier">traits</span><span class="special">::</span><span class="identifier">tag_of</span></tt> also has a second template argument,
that can be used in conjuction with <tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">enable_if</span></tt>
to provide tag support for groups of related types. This feature is not necessary
for our sequence, but for an example see the code in:
</p>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">sequence</span><span class="special">/</span><span class="identifier">adapted</span><span class="special">/</span><span class="identifier">mpl</span><span class="special">/</span><span class="identifier">tag_of</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.extension.designing_a_suitable_iterator"></a><h3>
<a name="id635846"></a>
<a href="extension.html#fusion.extension.designing_a_suitable_iterator">Designing a
suitable iterator</a>
</h3>
<p>
We need an iterator to describe positions, and provide access to the data within
our sequence. As it is straightforward to do, we are going to provide a random
access iterator in our example.
</p>
<p>
We will use a simple design, in which the 2 members of <tt class="computeroutput"><span class="identifier">example_struct</span></tt>
are given numbered indices, 0 for <tt class="computeroutput"><span class="identifier">name</span></tt>
and 1 for <tt class="computeroutput"><span class="identifier">age</span></tt> respectively.
</p>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Struct</span><span class="special">,</span> <span class="keyword">int</span> <span class="identifier">Pos</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">example_struct_iterator</span>
<span class="special">:</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">fusion</span><span class="special">::</span><span class="identifier">iterator_base</span><span class="special">&lt;</span><span class="identifier">example_struct_iterator</span><span class="special">&lt;</span><span class="identifier">Struct</span><span class="special">,</span> <span class="identifier">Pos</span><span class="special">&gt;</span> <span class="special">&gt;</span>
<span class="special">{</span>
<span class="identifier">BOOST_STATIC_ASSERT</span><span class="special">(</span><span class="identifier">Pos</span> <span class="special">&gt;=</span><span class="number">0</span> <span class="special">&amp;&amp;</span> <span class="identifier">Pos</span> <span class="special">&lt;</span> <span class="number">3</span><span class="special">);</span>
<span class="keyword">typedef</span> <span class="identifier">Struct</span> <span class="identifier">struct_type</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">int_</span><span class="special">&lt;</span><span class="identifier">Pos</span><span class="special">&gt;</span> <span class="identifier">index</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">fusion</span><span class="special">::</span><span class="identifier">random_access_traversal_tag</span> <span class="identifier">category</span><span class="special">;</span>
<span class="identifier">example_struct_iterator</span><span class="special">(</span><span class="identifier">Struct</span><span class="special">&amp;</span> <span class="identifier">str</span><span class="special">)</span>
<span class="special">:</span> <span class="identifier">struct_</span><span class="special">(</span><span class="identifier">str</span><span class="special">)</span> <span class="special">{}</span>
<span class="identifier">Struct</span><span class="special">&amp;</span> <span class="identifier">struct_</span><span class="special">;</span>
<span class="special">};</span>
</pre>
<p>
A quick summary of the details of our iterator:
</p>
<div class="orderedlist"><ol type="1">
<li>
The iterator is parameterized by the type it is iterating over, and the index
of the current element.
</li>
<li>
The typedefs <tt class="computeroutput"><span class="identifier">struct_type</span></tt>
and <tt class="computeroutput"><span class="identifier">index</span></tt> provide convenient
access to information we will need later in the implementation.
</li>
<li>
The typedef <tt class="computeroutput"><span class="identifier">category</span></tt> allows
the <tt class="computeroutput"><span class="identifier">traits</span><span class="special">::</span><a href="support/category_of.html" title="category_of"><tt class="computeroutput"><span class="identifier">category_of</span></tt></a></tt>
metafunction to establish the traversal category of the iterator.
</li>
<li>
The constructor stores a reference to the <tt class="computeroutput"><span class="identifier">example_struct</span></tt>
being iterated over.
</li>
</ol></div>
<p>
We also need to enable <a href="notes.html#fusion.notes.tag_dispatching"><span class="emphasis"><em>tag
dispatching</em></span></a> for our iterator type, with another specialization
of <tt class="computeroutput"><span class="identifier">traits</span><span class="special">::</span><span class="identifier">tag_of</span></tt>.
</p>
<p>
In isolation, the iterator implementation is pretty dry. Things should become
clearer as we add features to our implementation.
</p>
<a name="fusion.extension.a_first_couple_of_instructive_features"></a><h3>
<a name="id636490"></a>
<a href="extension.html#fusion.extension.a_first_couple_of_instructive_features">A first
couple of instructive features</a>
</h3>
<p>
To start with, we will get the <a href="iterators/metafunctions/value_of.html" title="value_of"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">value_of</span></tt></a> metafunction working. To
do this, we provide a specialization of the <tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">fusion</span><span class="special">::</span><span class="identifier">extension</span><span class="special">::</span><span class="identifier">value_of_impl</span></tt>
template for our iterator's tag type.
</p>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;&gt;</span>
<span class="keyword">struct</span> <span class="identifier">value_of_impl</span><span class="special">&lt;</span><span class="identifier">example</span><span class="special">::</span><span class="identifier">example_struct_iterator_tag</span><span class="special">&gt;</span>
<span class="special">{</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Iterator</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">apply</span><span class="special">;</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Struct</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">apply</span><span class="special">&lt;</span><span class="identifier">example</span><span class="special">::</span><span class="identifier">example_struct_iterator</span><span class="special">&lt;</span><span class="identifier">Struct</span><span class="special">,</span> <span class="number">0</span><span class="special">&gt;</span> <span class="special">&gt;</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Struct</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">apply</span><span class="special">&lt;</span><span class="identifier">example</span><span class="special">::</span><span class="identifier">example_struct_iterator</span><span class="special">&lt;</span><span class="identifier">Struct</span><span class="special">,</span> <span class="number">1</span><span class="special">&gt;</span> <span class="special">&gt;</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">int</span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
<span class="special">};</span>
</pre>
<p>
The implementation itself is pretty simple, it just uses 2 partial specializations
to provide the type of the 2 different members of <tt class="computeroutput"><span class="identifier">example_struct</span></tt>,
based on the index of the iterator.
</p>
<p>
To understand how <tt class="computeroutput"><span class="identifier">value_of_impl</span></tt>
is used by the library we will look at the implementation of <a href="iterators/metafunctions/value_of.html" title="value_of"><tt class="computeroutput"><span class="identifier">value_of</span></tt></a>:
</p>
<pre class="programlisting">
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Iterator</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <a href="iterators/metafunctions/value_of.html" title="value_of"><tt class="computeroutput"><span class="identifier">value_of</span></tt></a>
<span class="special">:</span> <span class="identifier">extension</span><span class="special">::</span><span class="identifier">value_of_impl</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">detail</span><span class="special">::</span><span class="identifier">tag_of</span><span class="special">&lt;</span><span class="identifier">Iterator</span><span class="special">&gt;::</span><span class="identifier">type</span><span class="special">&gt;::</span>
<span class="keyword">template</span> <span class="identifier">apply</span><span class="special">&lt;</span><span class="identifier">Iterator</span><span class="special">&gt;</span>
<span class="special">{};</span>
</pre>
<p>
So <a href="iterators/metafunctions/value_of.html" title="value_of"><tt class="computeroutput"><span class="identifier">value_of</span></tt></a>
uses <a href="notes.html#fusion.notes.tag_dispatching"><span class="emphasis"><em>tag dispatching</em></span></a>
to select an <a href="http://www.boost.org/libs/mpl/doc/refmanual/metafunction-class.html" target="_top">MPL
Metafunction Class</a> to provide its functionality. You will notice this
pattern throughout the implementation of Fusion.
</p>
<p>
Ok, lets enable dereferencing of our iterator. In this case we must provide
a suitable specialization of <tt class="computeroutput"><span class="identifier">deref_impl</span></tt>.
</p>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;&gt;</span>
<span class="keyword">struct</span> <span class="identifier">deref_impl</span><span class="special">&lt;</span><span class="identifier">example</span><span class="special">::</span><span class="identifier">example_struct_iterator_tag</span><span class="special">&gt;</span>
<span class="special">{</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Iterator</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">apply</span><span class="special">;</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Struct</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">apply</span><span class="special">&lt;</span><span class="identifier">example</span><span class="special">::</span><span class="identifier">example_struct_iterator</span><span class="special">&lt;</span><span class="identifier">Struct</span><span class="special">,</span> <span class="number">0</span><span class="special">&gt;</span> <span class="special">&gt;</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">mpl</span><span class="special">::</span><span class="identifier">if_</span><span class="special">&lt;</span>
<span class="identifier">is_const</span><span class="special">&lt;</span><span class="identifier">Struct</span><span class="special">&gt;,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="keyword">const</span><span class="special">&amp;,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">&amp;&gt;::</span><span class="identifier">type</span> <span class="identifier">type</span><span class="special">;</span>
<span class="keyword">static</span> <span class="identifier">type</span>
<span class="identifier">call</span><span class="special">(</span><span class="identifier">example</span><span class="special">::</span><span class="identifier">example_struct_iterator</span><span class="special">&lt;</span><span class="identifier">Struct</span><span class="special">,</span> <span class="number">0</span><span class="special">&gt;</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">it</span><span class="special">)</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">it</span><span class="special">.</span><span class="identifier">struct_</span><span class="special">.</span><span class="identifier">name</span><span class="special">;</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Struct</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">apply</span><span class="special">&lt;</span><span class="identifier">example</span><span class="special">::</span><span class="identifier">example_struct_iterator</span><span class="special">&lt;</span><span class="identifier">Struct</span><span class="special">,</span> <span class="number">1</span><span class="special">&gt;</span> <span class="special">&gt;</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">mpl</span><span class="special">::</span><span class="identifier">if_</span><span class="special">&lt;</span>
<span class="identifier">is_const</span><span class="special">&lt;</span><span class="identifier">Struct</span><span class="special">&gt;,</span> <span class="keyword">int</span> <span class="keyword">const</span><span class="special">&amp;,</span> <span class="keyword">int</span><span class="special">&amp;&gt;::</span><span class="identifier">type</span> <span class="identifier">type</span><span class="special">;</span>
<span class="keyword">static</span> <span class="identifier">type</span>
<span class="identifier">call</span><span class="special">(</span><span class="identifier">example</span><span class="special">::</span><span class="identifier">example_struct_iterator</span><span class="special">&lt;</span><span class="identifier">Struct</span><span class="special">,</span> <span class="number">1</span><span class="special">&gt;</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">it</span><span class="special">)</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">it</span><span class="special">.</span><span class="identifier">struct_</span><span class="special">.</span><span class="identifier">age</span><span class="special">;</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="special">};</span>
<span class="special">}</span>
</pre>
<p>
The use of <tt class="computeroutput"><span class="identifier">deref_impl</span></tt> is very
similar to that of <tt class="computeroutput"><span class="identifier">value_of_impl</span></tt>,
but it also provides some runtime functionality this time via the <tt class="computeroutput"><span class="identifier">call</span></tt> static member function. To see how
<tt class="computeroutput"><span class="identifier">deref_impl</span></tt> is used, lets have
a look at the implementation of <a href="iterators/functions/deref.html" title="deref"><tt class="computeroutput"><span class="identifier">deref</span></tt></a>:
</p>
<pre class="programlisting">
<span class="keyword">namespace</span> <span class="identifier">result_of</span>
<span class="special">{</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Iterator</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <a href="iterators/functions/deref.html" title="deref"><tt class="computeroutput"><span class="identifier">deref</span></tt></a>
<span class="special">:</span> <span class="identifier">extension</span><span class="special">::</span><span class="identifier">deref_impl</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">detail</span><span class="special">::</span><span class="identifier">tag_of</span><span class="special">&lt;</span><span class="identifier">Iterator</span><span class="special">&gt;::</span><span class="identifier">type</span><span class="special">&gt;::</span>
<span class="keyword">template</span> <span class="identifier">apply</span><span class="special">&lt;</span><span class="identifier">Iterator</span><span class="special">&gt;</span>
<span class="special">{};</span>
<span class="special">}</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Iterator</span><span class="special">&gt;</span>
<span class="keyword">typename</span> <span class="identifier">result_of</span><span class="special">::</span><span class="identifier">deref</span><span class="special">&lt;</span><span class="identifier">Iterator</span><span class="special">&gt;::</span><span class="identifier">type</span>
<a href="iterators/functions/deref.html" title="deref"><tt class="computeroutput"><span class="identifier">deref</span></tt></a><span class="special">(</span><span class="identifier">Iterator</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">i</span><span class="special">)</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="identifier">result_of</span><span class="special">::</span><span class="identifier">deref</span><span class="special">&lt;</span><span class="identifier">Iterator</span><span class="special">&gt;</span> <span class="identifier">deref_meta</span><span class="special">;</span>
<span class="keyword">return</span> <span class="identifier">deref_meta</span><span class="special">::</span><span class="identifier">call</span><span class="special">(</span><span class="identifier">i</span><span class="special">);</span>
<span class="special">}</span>
</pre>
<p>
So again <a href="iterators/metafunctions/deref.html" title="deref"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">deref</span></tt></a> uses <a href="notes.html#fusion.notes.tag_dispatching"><span class="emphasis"><em>tag
dispatching</em></span></a> in exactly the same way as the <a href="iterators/metafunctions/value_of.html" title="value_of"><tt class="computeroutput"><span class="identifier">value_of</span></tt></a> implementation. The runtime
functionality used by <a href="iterators/functions/deref.html" title="deref"><tt class="computeroutput"><span class="identifier">deref</span></tt></a> is provided by the <tt class="computeroutput"><span class="identifier">call</span></tt> static function of the selected <a href="http://www.boost.org/libs/mpl/doc/refmanual/metafunction-class.html" target="_top">MPL
Metafunction Class</a>.
</p>
<p>
The actual implementation of <tt class="computeroutput"><span class="identifier">deref_impl</span></tt>
is slightly more complex than that of <tt class="computeroutput"><span class="identifier">value_of_impl</span></tt>.
We also need to implement the <tt class="computeroutput"><span class="identifier">call</span></tt>
function, which returns a reference to the appropriate member of the underlying
sequence. We also require a little bit of metaprogramming to return <tt class="computeroutput"><span class="keyword">const</span></tt> references if the underlying sequence
is const.
</p>
<div class="note"><table border="0" summary="Note">
<tr>
<td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../doc/html/images/note.png"></td>
<th align="left">Note</th>
</tr>
<tr><td colspan="2" align="left" valign="top"><p>
Although there is a fair amount of left to do to produce a fully fledged
Fusion sequence, <a href="iterators/metafunctions/value_of.html" title="value_of"><tt class="computeroutput"><span class="identifier">value_of</span></tt></a> and <a href="iterators/functions/deref.html" title="deref"><tt class="computeroutput"><span class="identifier">deref</span></tt></a> illustrate all the signficant
concepts required. The remainder of the process is very repetitive, simply
requiring implementation of a suitable <tt class="computeroutput"><span class="identifier">xxxx_impl</span></tt>
for each feature <tt class="computeroutput"><span class="identifier">xxxx</span></tt>.
</p></td></tr>
</table></div>
<a name="fusion.extension.implementing_the_remaining_iterator_functionality"></a><h3>
<a name="id638798"></a>
<a href="extension.html#fusion.extension.implementing_the_remaining_iterator_functionality">Implementing
the remaining iterator functionality</a>
</h3>
<p>
Ok, now we have seen the way <a href="iterators/metafunctions/value_of.html" title="value_of"><tt class="computeroutput"><span class="identifier">value_of</span></tt></a> and <a href="iterators/functions/deref.html" title="deref"><tt class="computeroutput"><span class="identifier">deref</span></tt></a> work, everything else will work
in pretty much the same way. Lets start with forward iteration, by providing
a <tt class="computeroutput"><span class="identifier">next_impl</span></tt>:
</p>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;&gt;</span>
<span class="keyword">struct</span> <span class="identifier">next_impl</span><span class="special">&lt;</span><span class="identifier">example</span><span class="special">::</span><span class="identifier">example_struct_iterator_tag</span><span class="special">&gt;</span>
<span class="special">{</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Iterator</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">apply</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">Iterator</span><span class="special">::</span><span class="identifier">struct_type</span> <span class="identifier">struct_type</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">Iterator</span><span class="special">::</span><span class="identifier">index</span> <span class="identifier">index</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">example</span><span class="special">::</span><span class="identifier">example_struct_iterator</span><span class="special">&lt;</span><span class="identifier">struct_type</span><span class="special">,</span> <span class="identifier">index</span><span class="special">::</span><span class="identifier">value</span> <span class="special">+</span> <span class="number">1</span><span class="special">&gt;</span> <span class="identifier">type</span><span class="special">;</span>
<span class="keyword">static</span> <span class="identifier">type</span>
<span class="identifier">call</span><span class="special">(</span><span class="identifier">Iterator</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">i</span><span class="special">)</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">type</span><span class="special">(</span><span class="identifier">i</span><span class="special">.</span><span class="identifier">struct_</span><span class="special">);</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="special">};</span>
</pre>
<p>
This should be very familiar from our <tt class="computeroutput"><span class="identifier">deref_impl</span></tt>
implementation, we will be using this approach again and again now. Our design
is simply to increment the <tt class="computeroutput"><span class="identifier">index</span></tt>
counter to move on to the next element. The various other iterator manipulations
we need to perform will all just involve simple calculations with the <tt class="computeroutput"><span class="identifier">index</span></tt> variables.
</p>
<p>
We also need to provide a suitable <tt class="computeroutput"><span class="identifier">equal_to_impl</span></tt>
so that iterators can be correctly compared. A <a href="iterators/concepts/bidirectional_iterator.html" title="Bidirectional
Iterator">Bidirectional
Iterator</a> will also need an implementation of <tt class="computeroutput"><span class="identifier">prior_impl</span></tt>.
For a <a href="iterators/concepts/random_access_iterator.html" title="Random
Access Iterator">Random
Access Iterator</a> <tt class="computeroutput"><span class="identifier">distance_impl</span></tt>
and <tt class="computeroutput"><span class="identifier">advance_impl</span></tt> also need
to be provided in order to satisfy the necessary complexity guarantees. As
our iterator is a <a href="iterators/concepts/random_access_iterator.html" title="Random
Access Iterator">Random
Access Iterator</a> we will have to implement all of these functions.
</p>
<p>
Full implementations of <tt class="computeroutput"><span class="identifier">prior_impl</span></tt>,
<tt class="computeroutput"><span class="identifier">advance_impl</span></tt>, <tt class="computeroutput"><span class="identifier">distance_impl</span></tt> and <tt class="computeroutput"><span class="identifier">equal_to_impl</span></tt>
are provided in the example code.
</p>
<a name="fusion.extension.implementing_the_intrinsic_functions_of_the_sequence"></a><h3>
<a name="id639449"></a>
<a href="extension.html#fusion.extension.implementing_the_intrinsic_functions_of_the_sequence">Implementing
the intrinsic functions of the sequence</a>
</h3>
<p>
In order that Fusion can correctly identify our sequence as a Fusion sequence,
we need to enable <tt class="computeroutput"><span class="identifier">is_sequence</span></tt>
for our sequence type. As usual we just create an <tt class="computeroutput"><span class="identifier">impl</span></tt>
type specialized for our sequence tag:
</p>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;&gt;</span>
<span class="keyword">struct</span> <span class="identifier">is_sequence_impl</span><span class="special">&lt;</span><span class="identifier">example</span><span class="special">::</span><span class="identifier">example_sequence_tag</span><span class="special">&gt;</span>
<span class="special">{</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">apply</span> <span class="special">:</span> <span class="identifier">mpl</span><span class="special">::</span><span class="identifier">true_</span> <span class="special">{};</span>
<span class="special">};</span>
</pre>
<p>
We've some similar formalities to complete, providing <tt class="computeroutput"><span class="identifier">category_of_impl</span></tt>
so Fusion can correctly identify our sequence type, and <tt class="computeroutput"><span class="identifier">is_view_impl</span></tt>
so Fusion can correctly identify our sequence as not being a <a href="sequences/views.html" title="Views">View</a>
type. Implementations are provide in the example code.
</p>
<p>
Now we've completed some formalities, on to more interesting features. Lets
get <a href="sequences/intrinsics/functions/begin.html" title="begin"><tt class="computeroutput"><span class="identifier">begin</span></tt></a> working so that we can get an
iterator to start accessing the data in our sequence.
</p>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;&gt;</span>
<span class="keyword">struct</span> <span class="identifier">begin_impl</span><span class="special">&lt;</span><span class="identifier">example</span><span class="special">::</span><span class="identifier">example_sequence_tag</span><span class="special">&gt;</span>
<span class="special">{</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">apply</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="identifier">example</span><span class="special">::</span><span class="identifier">example_struct_iterator</span><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="number">0</span><span class="special">&gt;</span> <span class="identifier">type</span><span class="special">;</span>
<span class="keyword">static</span> <span class="identifier">type</span>
<span class="identifier">call</span><span class="special">(</span><span class="identifier">Sequence</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">)</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">type</span><span class="special">(</span><span class="identifier">seq</span><span class="special">);</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="special">};</span>
</pre>
<p>
The implementation uses the same ideas we have applied throughout, in this
case we are just creating one of the iterators we developed earlier, pointing
to the first element in the sequence. The implementation of <a href="sequences/intrinsics/functions/end.html" title="end"><tt class="computeroutput"><span class="identifier">end</span></tt></a> is very similar, and is provided
in the example code.
</p>
<p>
For our <a href="sequences/concepts/random_access_sequence.html" title="Random
Access Sequence">Random
Access Sequence</a> we will also need to implement <tt class="computeroutput"><span class="identifier">size_impl</span></tt>,
<tt class="computeroutput"><span class="identifier">value_at_impl</span></tt> and <tt class="computeroutput"><span class="identifier">at_impl</span></tt>.
</p>
<a name="fusion.extension.enabling_our_type_as_an_associative_container"></a><h3>
<a name="id640054"></a>
<a href="extension.html#fusion.extension.enabling_our_type_as_an_associative_container">Enabling
our type as an associative container</a>
</h3>
<p>
In order for <tt class="computeroutput"><span class="identifier">example_struct</span></tt>
to serve as an associative container, we need to enable 3 lookup features,
<a href="sequences/intrinsics/functions/at_key.html" title="at_key"><tt class="computeroutput"><span class="identifier">at_key</span></tt></a>, <a href="sequences/intrinsics/metafunctions/value_at_key.html" title="value_at_key"><tt class="computeroutput"><span class="identifier">value_at_key</span></tt></a> and <a href="sequences/intrinsics/functions/has_key.html" title="has_key"><tt class="computeroutput"><span class="identifier">has_key</span></tt></a>. We also need to provide an
implementation of the <tt class="computeroutput"><span class="identifier">is_associative</span></tt>
trait so that our sequence can be correctly identified as an associative container.
</p>
<p>
To implement <tt class="computeroutput"><span class="identifier">at_key_impl</span></tt> we
need to associate the <tt class="computeroutput"><span class="identifier">fields</span><span class="special">::</span><span class="identifier">age</span></tt> and
<tt class="computeroutput"><span class="identifier">fields</span><span class="special">::</span><span class="identifier">age</span></tt> types described in the <a href="quick_start.html" title="Quick Start">Quick
Start</a> guide with the appropriate members of <tt class="computeroutput"><span class="identifier">example_struct</span></tt>.
Our implementation is as follows:
</p>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;&gt;</span>
<span class="keyword">struct</span> <span class="identifier">at_key_impl</span><span class="special">&lt;</span><span class="identifier">example</span><span class="special">::</span><span class="identifier">example_sequence_tag</span><span class="special">&gt;</span>
<span class="special">{</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">Key</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">apply</span><span class="special">;</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">apply</span><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">fields</span><span class="special">::</span><span class="identifier">name</span><span class="special">&gt;</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">mpl</span><span class="special">::</span><span class="identifier">if_</span><span class="special">&lt;</span>
<span class="identifier">is_const</span><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;,</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="keyword">const</span><span class="special">&amp;,</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">&amp;&gt;::</span><span class="identifier">type</span> <span class="identifier">type</span><span class="special">;</span>
<span class="keyword">static</span> <span class="identifier">type</span>
<span class="identifier">call</span><span class="special">(</span><span class="identifier">Sequence</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">)</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">seq</span><span class="special">.</span><span class="identifier">name</span><span class="special">;</span>
<span class="special">};</span>
<span class="special">};</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Sequence</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">apply</span><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">,</span> <span class="identifier">fields</span><span class="special">::</span><span class="identifier">age</span><span class="special">&gt;</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">mpl</span><span class="special">::</span><span class="identifier">if_</span><span class="special">&lt;</span>
<span class="identifier">is_const</span><span class="special">&lt;</span><span class="identifier">Sequence</span><span class="special">&gt;,</span>
<span class="keyword">int</span> <span class="keyword">const</span><span class="special">&amp;,</span>
<span class="keyword">int</span><span class="special">&amp;&gt;::</span><span class="identifier">type</span> <span class="identifier">type</span><span class="special">;</span>
<span class="keyword">static</span> <span class="identifier">type</span>
<span class="identifier">call</span><span class="special">(</span><span class="identifier">Sequence</span><span class="special">&amp;</span> <span class="identifier">seq</span><span class="special">)</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">seq</span><span class="special">.</span><span class="identifier">age</span><span class="special">;</span>
<span class="special">};</span>
<span class="special">};</span>
<span class="special">};</span>
</pre>
<p>
Its all very similar to the implementations we've seen previously, such as
<tt class="computeroutput"><span class="identifier">deref_impl</span></tt> and <tt class="computeroutput"><span class="identifier">value_of_impl</span></tt>. Instead of identifying the
members by index or position, we are now selecting them using the types <tt class="computeroutput"><span class="identifier">fields</span><span class="special">::</span><span class="identifier">name</span></tt> and <tt class="computeroutput"><span class="identifier">fields</span><span class="special">::</span><span class="identifier">age</span></tt>. The
implementations of <tt class="computeroutput"><span class="identifier">value_at_key_impl</span></tt>
and <tt class="computeroutput"><span class="identifier">has_key_impl</span></tt> are equally
straightforward, and are provided in the example code, along with an implementation
of <tt class="computeroutput"><span class="identifier">is_associative_impl</span></tt>.
</p>
<a name="fusion.extension.summary"></a><h3>
<a name="id641060"></a>
<a href="extension.html#fusion.extension.summary">Summary</a>
</h3>
<p>
We've now worked through the entire process for adding a new random access
sequence and we've also enabled our type to serve as an associative container.
The implementation was slightly longwinded, but followed a simple repeating
pattern.
</p>
<p>
The support for <tt class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span></tt>, <a href="http://www.boost.org/libs/mpl/index.html" target="_top">MPL</a>
sequences, and <tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">array</span></tt> all use the same approach, and provide
additional examples of the approach for a variety of types.
</p>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="fusion.functional"></a><a href="functional.html" title="Functional">Functional</a></h2></div></div></div>
<div class="toc"><dl>
<dt><span class="section"><a href="functional/concepts.html">Concepts</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="functional/concepts/callable.html"> Callable Object</a></span></dt>
<dt><span class="section"><a href="functional/concepts/reg_callable.html"> Regular Callable
Object</a></span></dt>
<dt><span class="section"><a href="functional/concepts/def_callable.html"> Deferred
Callable Object</a></span></dt>
<dt><span class="section"><a href="functional/concepts/poly.html"> Polymorphic Function
Object</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="functional/invocation.html">Invocation</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="functional/invocation/functions.html">Functions</a></span></dt>
<dt><span class="section"><a href="functional/invocation/metafunctions.html">Metafunctions</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="functional/adapters.html"> Adapters</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="functional/adapters/fused.html">fused</a></span></dt>
<dt><span class="section"><a href="functional/adapters/fused_procedure.html">fused_procedure</a></span></dt>
<dt><span class="section"><a href="functional/adapters/fused_function_object.html">fused_function_object</a></span></dt>
<dt><span class="section"><a href="functional/adapters/unfused_generic.html">unfused_generic</a></span></dt>
<dt><span class="section"><a href="functional/adapters/unfused_lvalue_args.html">unfused_lvalue_args</a></span></dt>
<dt><span class="section"><a href="functional/adapters/unfused_rvalue_args.html">unfused_rvalue_args</a></span></dt>
<dt><span class="section"><a href="functional/adapters/unfused_typed.html">unfused_typed</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="functional/generation.html">Generation</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="functional/generation/functions.html">Functions</a></span></dt>
<dt><span class="section"><a href="functional/generation/metafunctions.html">Metafunctions</a></span></dt>
</dl></dd>
</dl></div>
<p>
Components to call functions and function objects and to make Fusion code callable
through a function object interface.
</p>
<a name="fusion.functional.header"></a><h3>
<a name="id641172"></a>
<a href="functional.html#fusion.functional.header">Header</a>
</h3>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">functional</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.functional.fused_and_unfused_forms"></a><h3>
<a name="id641256"></a>
<a href="functional.html#fusion.functional.fused_and_unfused_forms">Fused and unfused
forms</a>
</h3>
<p>
What is a function call?
</p>
<pre class="programlisting">
<span class="identifier">f</span> <span class="special">(</span><span class="identifier">a</span><span class="special">,</span><span class="identifier">b</span><span class="special">,</span><span class="identifier">c</span><span class="special">)</span>
</pre>
<p>
It is a name and a tuple written next to each other, left-to-right.
</p>
<p>
Although the C++ syntax does not allow to replace <tt class="literal">(a,b,c)</tt>
with some Fusion <a href="sequences.html" title="Sequences">Sequence</a>, introducing
yet another function provides a solution:
</p>
<pre class="programlisting">
<span class="identifier">invoke</span><span class="special">(</span><span class="identifier">f</span><span class="special">,</span><span class="identifier">my_sequence</span><span class="special">)</span>
</pre>
<p>
Alternatively it is possible to apply a simple transformation to <tt class="literal">f</tt>
in order to achieve the same effect:
</p>
<pre class="programlisting">
<span class="identifier">f</span> <span class="identifier">tuple</span> <span class="special">&lt;=&gt;</span> f' <span class="special">(</span><span class="identifier">tuple</span><span class="special">)</span>
</pre>
<p>
Now, <tt class="literal">f'</tt> is an unary function that takes the arguments to
<tt class="computeroutput"><span class="identifier">f</span></tt> as a tuple; <tt class="literal">f'</tt>
is the <span class="emphasis"><em>fused</em></span> form of <tt class="computeroutput"><span class="identifier">f</span></tt>.
Reading the above equivalence right-to-left to get the inverse transformation,
<tt class="computeroutput"><span class="identifier">f</span></tt> is the <span class="emphasis"><em>unfused</em></span>
form of <tt class="literal">f'</tt>.
</p>
<a name="fusion.functional.calling_functions_and_function_objects"></a><h3>
<a name="id641521"></a>
<a href="functional.html#fusion.functional.calling_functions_and_function_objects">Calling
functions and function objects</a>
</h3>
<p>
Having generic C++ code call back arbitrary functions provided by the client
used to be a heavily repetitive task, as different functions can differ in
arity, invocation syntax and other properties that might be part of the type.
Transporting arguments as Fusion sequences and factoring out the invocation
makes Fusion algorithms applicable to function arguments and also reduces the
problem to one invocation syntax and a fixed arity (instead of an arbitrary
number of arbitrary arguments times several syntactic variants times additional
properties).
</p>
<p>
Transforming an unfused function into its fused counterpart allows n-ary calls
from an algorithm that invokes an unary <a href="functional/concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a> with <a href="sequences.html" title="Sequences">Sequence</a>
arguments.
</p>
<p>
The library provides several function templates to invoke different kinds of
functions and adapters to transform them into fused form, respectively. Every
variant has a corresponding generator function template that returns an adapter
instance for the given argument.
</p>
<a name="fusion.functional.making_fusion_code_callable_through_a_function_object_interface"></a><h3>
<a name="id641592"></a>
<a href="functional.html#fusion.functional.making_fusion_code_callable_through_a_function_object_interface">Making
Fusion code callable through a function object interface</a>
</h3>
<p>
Transforming a fused function into its unfused counterpart allows to create
function objects to accept arbitrary calls. In other words, an unary function
object can be implemented instead of (maybe heavily overloaded) function templates
or function call operators.
</p>
<p>
The library provides several adapter variants that implement this transformation,
ranging from strictly typed to fully generic. The latter provides a reusable,
approximate solution to <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2002/n1385.htm" target="_top">The
Forwarding Problem</a>. Every generic variant has a corresponding generator
function template that returns an adapter instance for the given argument.
</p>
</div>
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Schwinger</small></td>
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<div class="titlepage"><div><div><h3 class="title">
<a name="fusion.functional.adapters"></a><a href="adapters.html" title=" Adapters"> Adapters</a></h3></div></div></div>
<div class="toc"><dl>
<dt><span class="section"><a href="adapters/fused.html">fused</a></span></dt>
<dt><span class="section"><a href="adapters/fused_procedure.html">fused_procedure</a></span></dt>
<dt><span class="section"><a href="adapters/fused_function_object.html">fused_function_object</a></span></dt>
<dt><span class="section"><a href="adapters/unfused_generic.html">unfused_generic</a></span></dt>
<dt><span class="section"><a href="adapters/unfused_lvalue_args.html">unfused_lvalue_args</a></span></dt>
<dt><span class="section"><a href="adapters/unfused_rvalue_args.html">unfused_rvalue_args</a></span></dt>
<dt><span class="section"><a href="adapters/unfused_typed.html">unfused_typed</a></span></dt>
</dl></div>
<p>
Function object templates to transform a particular target function.
</p>
</div>
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<div class="titlepage"><div><div><h4 class="title">
<a name="fusion.functional.adapters.fused"></a><a href="fused.html" title="fused">fused</a></h4></div></div></div>
<a name="fusion.functional.adapters.fused.description"></a><h5>
<a name="id648400"></a>
<a href="fused.html#fusion.functional.adapters.fused.description">Description</a>
</h5>
<p>
An unary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a> adapter template for <a href="../concepts/def_callable.html" title=" Deferred
Callable Object">Deferred
Callable Object</a> target functions. It takes a <a href="../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a> that contains the arguments for the target function.
</p>
<p>
The type of the target function is allowed to be const qualified or a reference.
Const qualification is preserved and propagated appropriately (in other
words, only const versions of <tt class="literal">operator()</tt> can be used
for a target function object that is const or, if the target function object
is held by value, the adapter is const - these semantics have nothing to
do with the const qualification of a member function, which is referring
to the type of object pointed to by <tt class="literal">this</tt> which is specified
with the first element in the sequence passed to the adapter).
</p>
<p>
If the target function is a pointer to a class members, the corresponding
object can be specified as a reference, pointer, or smart pointer. In case
of the latter, a freestanding <tt class="literal">get_pointer</tt> function must
be defined (Boost provides this function for <tt class="literal">std::auto_ptr</tt>
and <a href="http://www.boost.org/libs/smart_ptr/shared_ptr.htm" target="_top"><tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">shared_ptr</span></tt></a>).
</p>
<a name="fusion.functional.adapters.fused.header"></a><h5>
<a name="id648530"></a>
<a href="fused.html#fusion.functional.adapters.fused.header">Header</a>
</h5>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">functional</span><span class="special">/</span><span class="identifier">adapter</span><span class="special">/</span><span class="identifier">fused</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.functional.adapters.fused.synopsis"></a><h5>
<a name="id648636"></a>
<a href="fused.html#fusion.functional.adapters.fused.synopsis">Synopsis</a>
</h5>
<pre class="programlisting">
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Function</span><span class="special">&gt;</span>
<span class="keyword">class</span> <span class="identifier">fused</span><span class="special">;</span>
</pre>
<a name="fusion.functional.adapters.fused.template_parameters"></a><h5>
<a name="id648716"></a>
<a href="fused.html#fusion.functional.adapters.fused.template_parameters">Template
parameters</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Description
</p>
</th>
<th>
<p>
Default
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Function</span></tt>
</p>
</td>
<td>
<p>
A <a href="../concepts/def_callable.html" title=" Deferred
Callable Object">Deferred
Callable Object</a>
</p>
</td>
<td>
<p>
</p>
</td>
</tr></tbody>
</table></div>
<a name="fusion.functional.adapters.fused.model_of"></a><h5>
<a name="id648832"></a>
<a href="fused.html#fusion.functional.adapters.fused.model_of">Model of</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li><a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a></li>
<li><a href="../concepts/def_callable.html" title=" Deferred
Callable Object">Deferred Callable
Object</a></li>
</ul></div>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">R</span></tt></span></dt>
<dd><p>
A possibly const qualified <a href="../concepts/def_callable.html" title=" Deferred
Callable Object">Deferred
Callable Object</a> type or reference type thereof
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">r</span></tt></span></dt>
<dd><p>
An object convertible to <tt class="computeroutput"><span class="identifier">R</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">s</span></tt></span></dt>
<dd><p>
A <a href="../../sequences.html" title="Sequences">Sequence</a> of arguments that
are accepted by <tt class="computeroutput"><span class="identifier">r</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">f</span></tt></span></dt>
<dd><p>
An instance of <tt class="computeroutput"><span class="identifier">fused</span><span class="special">&lt;</span><span class="identifier">R</span><span class="special">&gt;</span></tt>
</p></dd>
</dl>
</div>
<a name="fusion.functional.adapters.fused.expression_semantics"></a><h5>
<a name="id649052"></a>
<a href="fused.html#fusion.functional.adapters.fused.expression_semantics">Expression
Semantics</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Expression
</p>
</th>
<th>
<p>
Semantics
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">fused</span><span class="special">&lt;</span><span class="identifier">R</span><span class="special">&gt;(</span><span class="identifier">r</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Creates a fused function as described above, initializes the target
function with <tt class="computeroutput"><span class="identifier">r</span></tt>.
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">fused</span><span class="special">&lt;</span><span class="identifier">R</span><span class="special">&gt;()</span></tt>
</p>
</td>
<td>
<p>
Creates a fused function as described above, attempts to use <tt class="computeroutput"><span class="identifier">R</span></tt>'s default constructor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">s</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Calls <tt class="computeroutput"><span class="identifier">r</span></tt> with the
elements in <tt class="computeroutput"><span class="identifier">s</span></tt> as
its arguments.
</p>
</td>
</tr>
</tbody>
</table></div>
<a name="fusion.functional.adapters.fused.example"></a><h5>
<a name="id649306"></a>
<a href="fused.html#fusion.functional.adapters.fused.example">Example</a>
</h5>
<pre class="programlisting">
<span class="identifier">fused</span><span class="special">&lt;</span> <a href="http://www.sgi.com/tech/stl/plus.html" target="_top"><tt class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">plus</span></tt></a><span class="special">&lt;</span><span class="keyword">long</span><span class="special">&gt;</span> <span class="special">&gt;</span> <span class="identifier">f</span><span class="special">;</span>
<span class="identifier">assert</span><span class="special">(</span><span class="identifier">f</span><span class="special">(</span><a href="../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">2l</span><span class="special">))</span> <span class="special">==</span> <span class="number">3l</span><span class="special">);</span>
</pre>
<a name="fusion.functional.adapters.fused.see_also"></a><h5>
<a name="id649484"></a>
<a href="fused.html#fusion.functional.adapters.fused.see_also">See also</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li><a href="fused_procedure.html" title="fused_procedure"><tt class="computeroutput"><span class="identifier">fused_procedure</span></tt></a></li>
<li><a href="fused_function_object.html" title="fused_function_object"><tt class="computeroutput"><span class="identifier">fused_function_object</span></tt></a></li>
<li><a href="../invocation/functions/invoke.html" title="invoke"><tt class="computeroutput"><span class="identifier">invoke</span></tt></a></li>
<li><a href="../../support/deduce.html" title="deduce"><tt class="computeroutput"><span class="identifier">deduce</span></tt></a></li>
</ul></div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h4 class="title">
<a name="fusion.functional.adapters.fused_function_object"></a><a href="fused_function_object.html" title="fused_function_object">fused_function_object</a></h4></div></div></div>
<a name="fusion.functional.adapters.fused_function_object.description"></a><h5>
<a name="id651278"></a>
<a href="fused_function_object.html#fusion.functional.adapters.fused_function_object.description">Description</a>
</h5>
<p>
An unary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a> adapter template for a <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a> target function. It takes a <a href="../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a> that contains the arguments for the target function.
</p>
<p>
The type of the target function is allowed to be const qualified or a reference.
Const qualification is preserved and propagated appropriately (in other
words, only const versions of <tt class="literal">operator()</tt> can be used
for an target function object that is const or, if the target function
object is held by value, the adapter is const).
</p>
<a name="fusion.functional.adapters.fused_function_object.header"></a><h5>
<a name="id651355"></a>
<a href="fused_function_object.html#fusion.functional.adapters.fused_function_object.header">Header</a>
</h5>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">functional</span><span class="special">/</span><span class="identifier">adapter</span><span class="special">/</span><span class="identifier">fused_function_object</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.functional.adapters.fused_function_object.synopsis"></a><h5>
<a name="id651462"></a>
<a href="fused_function_object.html#fusion.functional.adapters.fused_function_object.synopsis">Synopsis</a>
</h5>
<pre class="programlisting">
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Function</span><span class="special">&gt;</span>
<span class="keyword">class</span> <span class="identifier">fused_function_object</span><span class="special">;</span>
</pre>
<a name="fusion.functional.adapters.fused_function_object.template_parameters"></a><h5>
<a name="id651545"></a>
<a href="fused_function_object.html#fusion.functional.adapters.fused_function_object.template_parameters">Template
parameters</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Description
</p>
</th>
<th>
<p>
Default
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Function</span></tt>
</p>
</td>
<td>
<p>
<a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a> type
</p>
</td>
<td>
<p>
</p>
</td>
</tr></tbody>
</table></div>
<a name="fusion.functional.adapters.fused_function_object.model_of"></a><h5>
<a name="id651661"></a>
<a href="fused_function_object.html#fusion.functional.adapters.fused_function_object.model_of">Model
of</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li><a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a></li>
<li><a href="../concepts/def_callable.html" title=" Deferred
Callable Object">Deferred Callable
Object</a></li>
</ul></div>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">R</span></tt></span></dt>
<dd><p>
A possibly const qualified <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a> type or reference type thereof
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">r</span></tt></span></dt>
<dd><p>
An object convertible to <tt class="computeroutput"><span class="identifier">R</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">s</span></tt></span></dt>
<dd><p>
A <a href="../../sequences.html" title="Sequences">Sequence</a> of arguments that
are accepted by <tt class="computeroutput"><span class="identifier">r</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">f</span></tt></span></dt>
<dd><p>
An instance of <tt class="computeroutput"><span class="identifier">fused</span><span class="special">&lt;</span><span class="identifier">R</span><span class="special">&gt;</span></tt>
</p></dd>
</dl>
</div>
<a name="fusion.functional.adapters.fused_function_object.expression_semantics"></a><h5>
<a name="id651881"></a>
<a href="fused_function_object.html#fusion.functional.adapters.fused_function_object.expression_semantics">Expression
Semantics</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Expression
</p>
</th>
<th>
<p>
Semantics
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">fused_function_object</span><span class="special">&lt;</span><span class="identifier">R</span><span class="special">&gt;(</span><span class="identifier">r</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Creates a fused function as described above, initializes the target
function with <tt class="computeroutput"><span class="identifier">r</span></tt>.
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">fused_function_object</span><span class="special">&lt;</span><span class="identifier">R</span><span class="special">&gt;()</span></tt>
</p>
</td>
<td>
<p>
Creates a fused function as described above, attempts to use <tt class="computeroutput"><span class="identifier">R</span></tt>'s default constructor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">s</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Calls <tt class="computeroutput"><span class="identifier">r</span></tt> with the
elements in <tt class="computeroutput"><span class="identifier">s</span></tt> as
its arguments.
</p>
</td>
</tr>
</tbody>
</table></div>
<a name="fusion.functional.adapters.fused_function_object.example"></a><h5>
<a name="id652139"></a>
<a href="fused_function_object.html#fusion.functional.adapters.fused_function_object.example">Example</a>
</h5>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">SeqOfSeqs</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Func</span><span class="special">&gt;</span>
<span class="keyword">typename</span> <a href="../../algorithms/transformation/metafunctions/transform.html" title="transform"><tt class="computeroutput"><span class="identifier">result_of</span><span class="special">::</span><span class="identifier">transform</span></tt></a><span class="special">&lt;</span> <span class="identifier">zip_view</span><span class="special">&lt;</span><span class="identifier">SeqOfSeqs</span><span class="special">&gt;</span> <span class="keyword">const</span><span class="special">,</span>
<span class="identifier">fused_function_object</span><span class="special">&lt;</span><span class="identifier">Func</span> <span class="keyword">const</span> <span class="special">&amp;&gt;</span> <span class="special">&gt;::</span><span class="identifier">type</span>
<span class="identifier">n_ary_transform</span><span class="special">(</span><span class="identifier">SeqOfSeqs</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">s</span><span class="special">,</span> <span class="identifier">Func</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">f</span><span class="special">)</span>
<span class="special">{</span>
<span class="keyword">return</span> <a href="../../algorithms/transformation/functions/transform.html" title="transform"><tt class="computeroutput"><span class="identifier">transform</span></tt></a><span class="special">(</span><span class="identifier">zip_view</span><span class="special">&lt;</span><span class="identifier">SeqOfSeqs</span><span class="special">&gt;(</span><span class="identifier">s</span><span class="special">),</span>
<span class="identifier">fused_function_object</span><span class="special">&lt;</span><span class="identifier">Func</span> <span class="keyword">const</span> <span class="special">&amp;&gt;(</span><span class="identifier">f</span><span class="special">));</span>
<span class="special">}</span>
<span class="keyword">struct</span> <span class="identifier">sub</span>
<span class="special">{</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Sig</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">result</span><span class="special">;</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Self</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">result</span><span class="special">&lt;</span> <span class="identifier">Self</span><span class="special">(</span><span class="identifier">T</span><span class="special">,</span><span class="identifier">T</span><span class="special">)</span> <span class="special">&gt;</span>
<span class="special">{</span> <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">remove_reference</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">type</span><span class="special">;</span> <span class="special">};</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="identifier">T</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">T</span> <span class="identifier">lhs</span><span class="special">,</span> <span class="identifier">T</span> <span class="identifier">rhs</span><span class="special">)</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">lhs</span> <span class="special">-</span> <span class="identifier">rhs</span><span class="special">;</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="keyword">void</span> <span class="identifier">try_it</span><span class="special">()</span>
<span class="special">{</span>
<a href="../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">float</span><span class="special">&gt;</span> <span class="identifier">a</span><span class="special">(</span><span class="number">2</span><span class="special">,</span><span class="number">2.0f</span><span class="special">);</span>
<a href="../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">float</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">1.5f</span><span class="special">);</span>
<a href="../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">float</span><span class="special">&gt;</span> <span class="identifier">c</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">0.5f</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><span class="identifier">c</span> <span class="special">==</span> <span class="identifier">n_ary_transform</span><span class="special">(</span><a href="../../sequences/generation/functions/vector_tie.html" title="vector_tie"><tt class="computeroutput"><span class="identifier">vector_tie</span></tt></a><span class="special">(</span><span class="identifier">a</span><span class="special">,</span><span class="identifier">b</span><span class="special">),</span> <span class="identifier">sub</span><span class="special">()));</span>
<span class="special">}</span>
</pre>
<a name="fusion.functional.adapters.fused_function_object.see_also"></a><h5>
<a name="id653198"></a>
<a href="fused_function_object.html#fusion.functional.adapters.fused_function_object.see_also">See
also</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li><a href="fused.html" title="fused"><tt class="computeroutput"><span class="identifier">fused</span></tt></a></li>
<li><a href="fused_procedure.html" title="fused_procedure"><tt class="computeroutput"><span class="identifier">fused_procedure</span></tt></a></li>
<li><a href="../invocation/functions/invoke_fobj.html" title="
invoke_function_object"><tt class="computeroutput"><span class="identifier">invoke_function_object</span></tt></a></li>
<li><a href="../../support/deduce.html" title="deduce"><tt class="computeroutput"><span class="identifier">deduce</span></tt></a></li>
</ul></div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="fused_procedure.html"><img src="../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../adapters.html"><img src="../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="unfused_generic.html"><img src="../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h4 class="title">
<a name="fusion.functional.adapters.fused_procedure"></a><a href="fused_procedure.html" title="fused_procedure">fused_procedure</a></h4></div></div></div>
<a name="fusion.functional.adapters.fused_procedure.description"></a><h5>
<a name="id649617"></a>
<a href="fused_procedure.html#fusion.functional.adapters.fused_procedure.description">Description</a>
</h5>
<p>
An unary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a> adapter template for <a href="../concepts/callable.html" title=" Callable Object">Callable
Object</a> target functions. It takes a <a href="../../sequences/concepts/forward_sequence.html" title="Forward
Sequence">Forward
Sequence</a> that contains the arguments for the target function.
</p>
<p>
The result is discared and the adapter's return type is <tt class="computeroutput"><span class="keyword">void</span></tt>.
</p>
<p>
The type of the target function is allowed to be const qualified or a reference.
Const qualification is preserved and propagated appropriately (in other
words, only const versions of <tt class="literal">operator()</tt> can be used
for a target function object that is const or, if the target function object
is held by value, the adapter is const - these semantics have nothing to
do with the const qualification of a member function, which is referring
to the type of object pointed to by <tt class="literal">this</tt> which is specified
with the first element in the sequence passed to the adapter).
</p>
<p>
If the target function is a pointer to a members function, the corresponding
object can be specified as a reference, pointer, or smart pointer. In case
of the latter, a freestanding <tt class="literal">get_pointer</tt> function must
be defined (Boost provides this function for <tt class="literal">std::auto_ptr</tt>
and <a href="http://www.boost.org/libs/smart_ptr/shared_ptr.htm" target="_top"><tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">shared_ptr</span></tt></a>).
</p>
<p>
The target function must not be a pointer to a member object (dereferencing
such a pointer without returning anything does not make sense, so this
case is not implemented).
</p>
<a name="fusion.functional.adapters.fused_procedure.header"></a><h5>
<a name="id649776"></a>
<a href="fused_procedure.html#fusion.functional.adapters.fused_procedure.header">Header</a>
</h5>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">functional</span><span class="special">/</span><span class="identifier">adapter</span><span class="special">/</span><span class="identifier">fused_procedure</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.functional.adapters.fused_procedure.synopsis"></a><h5>
<a name="id649881"></a>
<a href="fused_procedure.html#fusion.functional.adapters.fused_procedure.synopsis">Synopsis</a>
</h5>
<pre class="programlisting">
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Function</span><span class="special">&gt;</span>
<span class="keyword">class</span> <span class="identifier">fused_procedure</span><span class="special">;</span>
</pre>
<a name="fusion.functional.adapters.fused_procedure.template_parameters"></a><h5>
<a name="id649962"></a>
<a href="fused_procedure.html#fusion.functional.adapters.fused_procedure.template_parameters">Template
parameters</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Description
</p>
</th>
<th>
<p>
Default
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Function</span></tt>
</p>
</td>
<td>
<p>
<a href="../concepts/callable.html" title=" Callable Object">Callable Object</a>
type
</p>
</td>
<td>
<p>
</p>
</td>
</tr></tbody>
</table></div>
<a name="fusion.functional.adapters.fused_procedure.model_of"></a><h5>
<a name="id650076"></a>
<a href="fused_procedure.html#fusion.functional.adapters.fused_procedure.model_of">Model
of</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li><a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a></li>
<li><a href="../concepts/def_callable.html" title=" Deferred
Callable Object">Deferred Callable
Object</a></li>
</ul></div>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">R</span></tt></span></dt>
<dd><p>
A possibly const qualified <a href="../concepts/callable.html" title=" Callable Object">Callable
Object</a> type or reference type thereof
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">r</span></tt></span></dt>
<dd><p>
An object convertible to <tt class="computeroutput"><span class="identifier">R</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">s</span></tt></span></dt>
<dd><p>
A <a href="../../sequences.html" title="Sequences">Sequence</a> of arguments that
are accepted by <tt class="computeroutput"><span class="identifier">r</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">f</span></tt></span></dt>
<dd><p>
An instance of <tt class="computeroutput"><span class="identifier">fused</span><span class="special">&lt;</span><span class="identifier">R</span><span class="special">&gt;</span></tt>
</p></dd>
</dl>
</div>
<a name="fusion.functional.adapters.fused_procedure.expression_semantics"></a><h5>
<a name="id650297"></a>
<a href="fused_procedure.html#fusion.functional.adapters.fused_procedure.expression_semantics">Expression
Semantics</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Expression
</p>
</th>
<th>
<p>
Semantics
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">fused_procedure</span><span class="special">&lt;</span><span class="identifier">R</span><span class="special">&gt;(</span><span class="identifier">r</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Creates a fused function as described above, initializes the target
function with <tt class="computeroutput"><span class="identifier">r</span></tt>.
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">fused_procedure</span><span class="special">&lt;</span><span class="identifier">R</span><span class="special">&gt;()</span></tt>
</p>
</td>
<td>
<p>
Creates a fused function as described above, attempts to use <tt class="computeroutput"><span class="identifier">R</span></tt>'s default constructor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">s</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Calls <tt class="computeroutput"><span class="identifier">r</span></tt> with the
elements in <tt class="computeroutput"><span class="identifier">s</span></tt> as
its arguments.
</p>
</td>
</tr>
</tbody>
</table></div>
<a name="fusion.functional.adapters.fused_procedure.example"></a><h5>
<a name="id650555"></a>
<a href="fused_procedure.html#fusion.functional.adapters.fused_procedure.example">Example</a>
</h5>
<pre class="programlisting">
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">SequenceOfSequences</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Func</span><span class="special">&gt;</span>
<span class="keyword">void</span> <span class="identifier">n_ary_for_each</span><span class="special">(</span><span class="identifier">SequenceOfSequences</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">s</span><span class="special">,</span> <span class="identifier">Func</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">f</span><span class="special">)</span>
<span class="special">{</span>
<a href="../../algorithms/iteration/functions/for_each.html" title="for_each"><tt class="computeroutput"><span class="identifier">for_each</span></tt></a><span class="special">(</span><a href="../../sequences/views/zip_view.html" title="zip_view"><tt class="computeroutput"><span class="identifier">zip_view</span></tt></a><span class="special">&lt;</span><span class="identifier">SequenceOfSequences</span><span class="special">&gt;(</span><span class="identifier">s</span><span class="special">),</span>
<span class="identifier">fused_procedure</span><span class="special">&lt;</span><span class="identifier">Func</span> <span class="keyword">const</span> <span class="special">&amp;&gt;(</span><span class="identifier">f</span><span class="special">));</span>
<span class="special">}</span>
<span class="keyword">void</span> <span class="identifier">try_it</span><span class="special">()</span>
<span class="special">{</span>
<a href="../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">float</span><span class="special">&gt;</span> <span class="identifier">a</span><span class="special">(</span><span class="number">2</span><span class="special">,</span><span class="number">2.0f</span><span class="special">);</span>
<a href="../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">float</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">1.5f</span><span class="special">);</span>
<span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">lambda</span><span class="special">;</span>
<span class="identifier">n_ary_for_each</span><span class="special">(</span><a href="../../sequences/generation/functions/vector_tie.html" title="vector_tie"><tt class="computeroutput"><span class="identifier">vector_tie</span></tt></a><span class="special">(</span><span class="identifier">a</span><span class="special">,</span><span class="identifier">b</span><span class="special">),</span> <span class="identifier">_1</span> <span class="special">-=</span> <span class="identifier">_2</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><span class="identifier">a</span> <span class="special">==</span> <a href="../../sequences/generation/functions/make_vector.html" title="make_vector"><tt class="computeroutput"><span class="identifier">make_vector</span></tt></a><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">0.5f</span><span class="special">));</span>
<span class="special">}</span>
</pre>
<a name="fusion.functional.adapters.fused_procedure.see_also"></a><h5>
<a name="id651165"></a>
<a href="fused_procedure.html#fusion.functional.adapters.fused_procedure.see_also">See
also</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li><a href="fused.html" title="fused"><tt class="computeroutput"><span class="identifier">fused</span></tt></a></li>
<li><a href="fused_function_object.html" title="fused_function_object"><tt class="computeroutput"><span class="identifier">fused_function_object</span></tt></a></li>
<li><a href="../invocation/functions/invoke_proc.html" title="
invoke_procedure"><tt class="computeroutput"><span class="identifier">invoke_procedure</span></tt></a></li>
</ul></div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="fused.html"><img src="../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../adapters.html"><img src="../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="fused_function_object.html"><img src="../../../../../../../doc/html/images/next.png" alt="Next"></a>
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h4 class="title">
<a name="fusion.functional.adapters.unfused_generic"></a><a href="unfused_generic.html" title="unfused_generic">unfused_generic</a></h4></div></div></div>
<a name="fusion.functional.adapters.unfused_generic.description"></a><h5>
<a name="id653334"></a>
<a href="unfused_generic.html#fusion.functional.adapters.unfused_generic.description">Description</a>
</h5>
<p>
An n-ary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a> adapter template for an unary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a> target function. When called, its arguments are
bundled to a <a href="../../sequences/concepts/random_access_sequence.html" title="Random
Access Sequence">Random
Access Sequence</a> of references that is passed to the target function.
Non-const LValue arguments are transported as references to non-const,
otherwise references to const are used.
</p>
<div class="sidebar"><p>
<span class="inlinemediaobject"><img src="../../../images/tip.png" alt="tip"></span> Detecting mutable LValues on a per-argument basis
is currently a compile time expensive operation (see <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2002/n1385.htm" target="_top">The
Forwarding Problem</a> for details). Therefore, there are two, lightweight
and more restricted variants of this class template, <a href="unfused_lvalue_args.html" title="unfused_lvalue_args"><tt class="computeroutput"><span class="identifier">unfused_lvalue_args</span></tt></a> and <a href="unfused_rvalue_args.html" title="unfused_rvalue_args"><tt class="computeroutput"><span class="identifier">unfused_rvalue_args</span></tt></a>.
</p></div>
<p>
The type of the target function is allowed to be const qualified or a reference.
Const qualification is preserved and propagated appropriately (in other
words, only const versions of <tt class="literal">operator()</tt> can be used
if the target function object is const - or, in case the target function
object is held by value, the adapter is const).
</p>
<a name="fusion.functional.adapters.unfused_generic.header"></a><h5>
<a name="id653487"></a>
<a href="unfused_generic.html#fusion.functional.adapters.unfused_generic.header">Header</a>
</h5>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">functional</span><span class="special">/</span><span class="identifier">adapter</span><span class="special">/</span><span class="identifier">unfused_generic</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.functional.adapters.unfused_generic.synopsis"></a><h5>
<a name="id653594"></a>
<a href="unfused_generic.html#fusion.functional.adapters.unfused_generic.synopsis">Synopsis</a>
</h5>
<pre class="programlisting">
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Function</span><span class="special">&gt;</span>
<span class="keyword">class</span> <span class="identifier">unfused_generic</span><span class="special">;</span>
</pre>
<a name="fusion.functional.adapters.unfused_generic.template_parameters"></a><h5>
<a name="id653675"></a>
<a href="unfused_generic.html#fusion.functional.adapters.unfused_generic.template_parameters">Template
parameters</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Description
</p>
</th>
<th>
<p>
Default
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Function</span></tt>
</p>
</td>
<td>
<p>
An unary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a>
</p>
</td>
<td>
<p>
</p>
</td>
</tr></tbody>
</table></div>
<a name="fusion.functional.adapters.unfused_generic.model_of"></a><h5>
<a name="id653790"></a>
<a href="unfused_generic.html#fusion.functional.adapters.unfused_generic.model_of">Model
of</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li><a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a></li>
<li><a href="../concepts/def_callable.html" title=" Deferred
Callable Object">Deferred Callable
Object</a></li>
</ul></div>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">F</span></tt></span></dt>
<dd><p>
A possibly const qualified, unary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a> type or reference type thereof
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">f</span></tt></span></dt>
<dd><p>
An object convertible to <tt class="computeroutput"><span class="identifier">F</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">UG</span></tt></span></dt>
<dd><p>
The type <tt class="computeroutput"><span class="identifier">unfused_generic</span><span class="special">&lt;</span><span class="identifier">F</span><span class="special">&gt;</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">ug</span></tt></span></dt>
<dd><p>
An instance of <tt class="computeroutput"><span class="identifier">UG</span></tt>,
initialized with <tt class="computeroutput"><span class="identifier">f</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">a0</span></tt>...<tt class="computeroutput"><span class="identifier">aN</span></tt></span></dt>
<dd><p>
Arguments to <tt class="computeroutput"><span class="identifier">ug</span></tt>
</p></dd>
</dl>
</div>
<a name="fusion.functional.adapters.unfused_generic.expression_semantics"></a><h5>
<a name="id654058"></a>
<a href="unfused_generic.html#fusion.functional.adapters.unfused_generic.expression_semantics">Expression
Semantics</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Expression
</p>
</th>
<th>
<p>
Semantics
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">UG</span><span class="special">(</span><span class="identifier">f</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Creates a fused function as described above, initializes the target
function with <tt class="computeroutput"><span class="identifier">f</span></tt>.
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">UG</span><span class="special">()</span></tt>
</p>
</td>
<td>
<p>
Creates a fused function as described above, attempts to use <tt class="computeroutput"><span class="identifier">F</span></tt>'s default constructor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">ug</span><span class="special">(</span><span class="identifier">a0</span></tt>...<tt class="computeroutput"><span class="identifier">aN</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Calls <tt class="computeroutput"><span class="identifier">f</span></tt> with a
<a href="../../sequences.html" title="Sequences">Sequence</a> that contains
references to the arguments <tt class="computeroutput"><span class="identifier">a0</span></tt>...<tt class="computeroutput"><span class="identifier">aN</span></tt>.
</p>
</td>
</tr>
</tbody>
</table></div>
<a name="fusion.functional.adapters.unfused_generic.example"></a><h5>
<a name="id654324"></a>
<a href="unfused_generic.html#fusion.functional.adapters.unfused_generic.example">Example</a>
</h5>
<pre class="programlisting">
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Function</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="keyword">class</span> <span class="identifier">fused_bound_1st</span>
<span class="special">{</span>
<span class="keyword">typename</span> <span class="identifier">traits</span><span class="special">::</span><span class="identifier">deduce</span><span class="special">&lt;</span><span class="identifier">Function</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">fnc_deferred</span><span class="special">;</span>
<span class="keyword">typename</span> <span class="identifier">traits</span><span class="special">::</span><span class="identifier">deduce</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">xxx_bound</span><span class="special">;</span>
<span class="keyword">public</span><span class="special">:</span>
<span class="identifier">fused_bound_1st</span><span class="special">(</span><span class="identifier">Function</span> <span class="identifier">deferred</span><span class="special">,</span> <span class="identifier">T</span> <span class="identifier">bound</span><span class="special">)</span>
<span class="special">:</span> <span class="identifier">fnc_deferred</span><span class="special">(</span><span class="identifier">deferred</span><span class="special">),</span> <span class="identifier">xxx_bound</span><span class="special">(</span><span class="identifier">bound</span><span class="special">)</span>
<span class="special">{</span> <span class="special">}</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Sig</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">result</span><span class="special">;</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Self</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Seq</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">result</span><span class="special">&lt;</span> <span class="identifier">Self</span><span class="special">(</span><span class="identifier">Seq</span><span class="special">)</span> <span class="special">&gt;</span>
<span class="special">:</span> <span class="identifier">result_of</span><span class="special">::</span><span class="identifier">invoke</span><span class="special">&lt;</span> <span class="identifier">Function</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">result_of</span><span class="special">::</span><span class="identifier">push_front</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <span class="identifier">remove_reference</span><span class="special">&lt;</span><span class="identifier">Seq</span><span class="special">&gt;::</span><span class="identifier">type</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="special">&gt;</span>
<span class="special">{</span> <span class="special">};</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Seq</span><span class="special">&gt;</span>
<span class="keyword">typename</span> <span class="identifier">result</span><span class="special">&lt;</span> <span class="keyword">void</span><span class="special">(</span><span class="identifier">Seq</span><span class="special">)</span> <span class="special">&gt;::</span><span class="identifier">type</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">Seq</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">s</span><span class="special">)</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">invoke</span><span class="special">(</span><span class="identifier">fnc_deferred</span><span class="special">,</span> <span class="identifier">push_front</span><span class="special">(</span><span class="identifier">s</span><span class="special">,</span><span class="identifier">xxx_bound</span><span class="special">));</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Function</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="identifier">unfused_generic</span><span class="special">&lt;</span> <span class="identifier">fused_bound_1st</span><span class="special">&lt;</span><span class="identifier">Function</span><span class="special">,</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&gt;</span>
<span class="identifier">bind_1st</span><span class="special">(</span><span class="identifier">Function</span> <span class="identifier">f</span><span class="special">,</span> <span class="identifier">T</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">x</span><span class="special">)</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">unfused_generic</span><span class="special">&lt;</span> <span class="identifier">fused_bound_1st</span><span class="special">&lt;</span><span class="identifier">Function</span><span class="special">,</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&gt;(</span>
<span class="identifier">fused_bound_1st</span><span class="special">&lt;</span><span class="identifier">Function</span><span class="special">,</span><span class="identifier">T</span><span class="special">&gt;(</span><span class="identifier">f</span><span class="special">,</span><span class="identifier">x</span><span class="special">)</span> <span class="special">);</span>
<span class="special">}</span>
<span class="keyword">int</span> <span class="identifier">test_func</span><span class="special">(</span><span class="keyword">int</span> <span class="identifier">a</span><span class="special">,</span> <span class="keyword">int</span> <span class="identifier">b</span><span class="special">,</span> <span class="keyword">int</span> <span class="identifier">c</span><span class="special">)</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="identifier">a</span><span class="special">+</span><span class="identifier">b</span><span class="special">+</span><span class="identifier">c</span><span class="special">;</span>
<span class="special">}</span>
<span class="keyword">void</span> <span class="identifier">try_it</span><span class="special">()</span>
<span class="special">{</span>
<span class="identifier">assert</span><span class="special">(</span><span class="identifier">bind_1st</span><span class="special">(&amp;</span> <span class="identifier">test_func</span><span class="special">,</span><span class="number">3</span><span class="special">)(-</span><span class="number">2</span><span class="special">,-</span><span class="number">1</span><span class="special">)</span> <span class="special">==</span> <span class="number">0</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><span class="identifier">bind_1st</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">plus</span><span class="special">&lt;</span><span class="keyword">float</span><span class="special">&gt;(),</span> <span class="number">1</span><span class="special">)(</span><span class="number">0.5f</span><span class="special">)</span> <span class="special">==</span> <span class="number">1.5f</span><span class="special">);</span>
<span class="special">}</span>
</pre>
<a name="fusion.functional.adapters.unfused_generic.see_also"></a><h5>
<a name="id655720"></a>
<a href="unfused_generic.html#fusion.functional.adapters.unfused_generic.see_also">See
also</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li><a href="unfused_lvalue_args.html" title="unfused_lvalue_args"><tt class="computeroutput"><span class="identifier">unfused_lvalue_args</span></tt></a></li>
<li><a href="unfused_rvalue_args.html" title="unfused_rvalue_args"><tt class="computeroutput"><span class="identifier">unfused_rvalue_args</span></tt></a></li>
<li><a href="unfused_typed.html" title="unfused_typed"><tt class="computeroutput"><span class="identifier">unfused_typed</span></tt></a></li>
<li><a href="../../support/deduce.html" title="deduce"><tt class="computeroutput"><span class="identifier">deduce</span></tt></a></li>
<li><a href="../../support/deduce_sequence.html" title="deduce_sequence"><tt class="computeroutput"><span class="identifier">deduce_sequence</span></tt></a></li>
</ul></div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h4 class="title">
<a name="fusion.functional.adapters.unfused_lvalue_args"></a><a href="unfused_lvalue_args.html" title="unfused_lvalue_args">unfused_lvalue_args</a></h4></div></div></div>
<a name="fusion.functional.adapters.unfused_lvalue_args.description"></a><h5>
<a name="id655877"></a>
<a href="unfused_lvalue_args.html#fusion.functional.adapters.unfused_lvalue_args.description">Description</a>
</h5>
<p>
An n-ary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a> adapter template for an unary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a> target function. When called, its arguments are
bundled to a <a href="../../sequences/concepts/random_access_sequence.html" title="Random
Access Sequence">Random
Access Sequence</a> of references that is passed to the target function
object. Only LValue arguments are accepted.
</p>
<p>
The type of the target function is allowed to be const qualified or a reference.
Const qualification is preserved and propagated appropriately (in other
words, only const versions of <tt class="literal">operator()</tt> can be used
if the target function object is const - or, in case the target function
object is held by value, the adapter is const).
</p>
<a name="fusion.functional.adapters.unfused_lvalue_args.header"></a><h5>
<a name="id655956"></a>
<a href="unfused_lvalue_args.html#fusion.functional.adapters.unfused_lvalue_args.header">Header</a>
</h5>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">functional</span><span class="special">/</span><span class="identifier">adapter</span><span class="special">/</span><span class="identifier">unfused_lvalue_args</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.functional.adapters.unfused_lvalue_args.synopsis"></a><h5>
<a name="id656063"></a>
<a href="unfused_lvalue_args.html#fusion.functional.adapters.unfused_lvalue_args.synopsis">Synopsis</a>
</h5>
<pre class="programlisting">
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Function</span><span class="special">&gt;</span>
<span class="keyword">class</span> <span class="identifier">unfused_lvalue_args</span><span class="special">;</span>
</pre>
<a name="fusion.functional.adapters.unfused_lvalue_args.template_parameters"></a><h5>
<a name="id656146"></a>
<a href="unfused_lvalue_args.html#fusion.functional.adapters.unfused_lvalue_args.template_parameters">Template
parameters</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Description
</p>
</th>
<th>
<p>
Default
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Function</span></tt>
</p>
</td>
<td>
<p>
A unary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a>
</p>
</td>
<td>
<p>
</p>
</td>
</tr></tbody>
</table></div>
<a name="fusion.functional.adapters.unfused_lvalue_args.model_of"></a><h5>
<a name="id656261"></a>
<a href="unfused_lvalue_args.html#fusion.functional.adapters.unfused_lvalue_args.model_of">Model
of</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li><a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a></li>
<li><a href="../concepts/def_callable.html" title=" Deferred
Callable Object">Deferred Callable
Object</a></li>
</ul></div>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">F</span></tt></span></dt>
<dd><p>
A possibly const qualified, unary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a> type or reference type thereof
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">f</span></tt></span></dt>
<dd><p>
An object convertible to <tt class="computeroutput"><span class="identifier">F</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">UL</span></tt></span></dt>
<dd><p>
The type <tt class="computeroutput"><span class="identifier">unfused_lvalue_args</span><span class="special">&lt;</span><span class="identifier">F</span><span class="special">&gt;</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">ul</span></tt></span></dt>
<dd><p>
An instance of <tt class="computeroutput"><span class="identifier">UL</span></tt>,
initialized with <tt class="computeroutput"><span class="identifier">f</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">a0</span></tt>...<tt class="computeroutput"><span class="identifier">aN</span></tt></span></dt>
<dd><p>
Arguments to <tt class="computeroutput"><span class="identifier">ul</span></tt>
</p></dd>
</dl>
</div>
<a name="fusion.functional.adapters.unfused_lvalue_args.expression_semantics"></a><h5>
<a name="id656531"></a>
<a href="unfused_lvalue_args.html#fusion.functional.adapters.unfused_lvalue_args.expression_semantics">Expression
Semantics</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Expression
</p>
</th>
<th>
<p>
Semantics
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">UL</span><span class="special">(</span><span class="identifier">f</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Creates a fused function as described above, initializes the target
function with <tt class="computeroutput"><span class="identifier">f</span></tt>.
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">UL</span><span class="special">()</span></tt>
</p>
</td>
<td>
<p>
Creates a fused function as described above, attempts to use <tt class="computeroutput"><span class="identifier">F</span></tt>'s default constructor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">ul</span><span class="special">(</span><span class="identifier">a0</span></tt>...<tt class="computeroutput"><span class="identifier">aN</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Calls <tt class="computeroutput"><span class="identifier">f</span></tt> with a
<a href="../../sequences.html" title="Sequences">Sequence</a> that contains
references to the arguments <tt class="computeroutput"><span class="identifier">a0</span></tt>...<tt class="computeroutput"><span class="identifier">aN</span></tt>.
</p>
</td>
</tr>
</tbody>
</table></div>
<a name="fusion.functional.adapters.unfused_lvalue_args.example"></a><h5>
<a name="id656798"></a>
<a href="unfused_lvalue_args.html#fusion.functional.adapters.unfused_lvalue_args.example">Example</a>
</h5>
<pre class="programlisting">
<span class="keyword">struct</span> <span class="identifier">fused_incrementer</span>
<span class="special">{</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Seq</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">result</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">void</span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Seq</span><span class="special">&gt;</span>
<span class="keyword">void</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">Seq</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">s</span><span class="special">)</span> <span class="keyword">const</span>
<span class="special">{</span>
<a href="../../algorithms/iteration/functions/for_each.html" title="for_each"><tt class="computeroutput"><span class="identifier">for_each</span></tt></a><span class="special">(</span><span class="identifier">s</span><span class="special">,++</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">lambda</span><span class="special">::</span><span class="identifier">_1</span><span class="special">);</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="keyword">void</span> <span class="identifier">try_it</span><span class="special">()</span>
<span class="special">{</span>
<span class="identifier">unfused_lvalue_args</span><span class="special">&lt;</span><span class="identifier">fused_incrementer</span><span class="special">&gt;</span> <span class="identifier">increment</span><span class="special">;</span>
<span class="keyword">int</span> <span class="identifier">a</span> <span class="special">=</span> <span class="number">2</span><span class="special">;</span> <span class="keyword">char</span> <span class="identifier">b</span> <span class="special">=</span> <span class="char">'X'</span><span class="special">;</span>
<span class="identifier">increment</span><span class="special">(</span><span class="identifier">a</span><span class="special">,</span><span class="identifier">b</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><span class="identifier">a</span> <span class="special">==</span> <span class="number">3</span> <span class="special">&amp;&amp;</span> <span class="identifier">b</span> <span class="special">==</span> <span class="char">'Y'</span><span class="special">);</span>
<span class="special">}</span>
</pre>
<a name="fusion.functional.adapters.unfused_lvalue_args.see_also"></a><h5>
<a name="id657296"></a>
<a href="unfused_lvalue_args.html#fusion.functional.adapters.unfused_lvalue_args.see_also">See
also</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li><a href="unfused_rvalue_args.html" title="unfused_rvalue_args"><tt class="computeroutput"><span class="identifier">unfused_rvalue_args</span></tt></a></li>
<li><a href="unfused_generic.html" title="unfused_generic"><tt class="computeroutput"><span class="identifier">unfused_generic</span></tt></a></li>
<li><a href="unfused_typed.html" title="unfused_typed"><tt class="computeroutput"><span class="identifier">unfused_typed</span></tt></a></li>
</ul></div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="unfused_generic.html"><img src="../../../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../adapters.html"><img src="../../../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="unfused_rvalue_args.html"><img src="../../../../../../../doc/html/images/next.png" alt="Next"></a>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h4 class="title">
<a name="fusion.functional.adapters.unfused_rvalue_args"></a><a href="unfused_rvalue_args.html" title="unfused_rvalue_args">unfused_rvalue_args</a></h4></div></div></div>
<a name="fusion.functional.adapters.unfused_rvalue_args.description"></a><h5>
<a name="id657410"></a>
<a href="unfused_rvalue_args.html#fusion.functional.adapters.unfused_rvalue_args.description">Description</a>
</h5>
<p>
An n-ary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a> adapter template for an unary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a> target function. When called, its arguments are
bundled to a <a href="../../sequences/concepts/random_access_sequence.html" title="Random
Access Sequence">Random
Access Sequence</a> of references that is passed to the target function
object. All referenced objects in the sequence are const qualified.
</p>
<p>
The type of the target function is allowed to be const qualified or a reference.
Const qualification is preserved and propagated appropriately (in other
words, only const versions of <tt class="literal">operator()</tt> can be used
if the target function object is const - or, in case the target function
object is held by value, the adapter is const).
</p>
<a name="fusion.functional.adapters.unfused_rvalue_args.header"></a><h5>
<a name="id657489"></a>
<a href="unfused_rvalue_args.html#fusion.functional.adapters.unfused_rvalue_args.header">Header</a>
</h5>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">functional</span><span class="special">/</span><span class="identifier">adapter</span><span class="special">/</span><span class="identifier">unfused_rvalue_args</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.functional.adapters.unfused_rvalue_args.synopsis"></a><h5>
<a name="id657596"></a>
<a href="unfused_rvalue_args.html#fusion.functional.adapters.unfused_rvalue_args.synopsis">Synopsis</a>
</h5>
<pre class="programlisting">
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Function</span><span class="special">&gt;</span>
<span class="keyword">class</span> <span class="identifier">unfused_rvalue_args</span><span class="special">;</span>
</pre>
<a name="fusion.functional.adapters.unfused_rvalue_args.template_parameters"></a><h5>
<a name="id657678"></a>
<a href="unfused_rvalue_args.html#fusion.functional.adapters.unfused_rvalue_args.template_parameters">Template
parameters</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Description
</p>
</th>
<th>
<p>
Default
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Function</span></tt>
</p>
</td>
<td>
<p>
A unary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a>
</p>
</td>
<td>
<p>
</p>
</td>
</tr></tbody>
</table></div>
<a name="fusion.functional.adapters.unfused_rvalue_args.model_of"></a><h5>
<a name="id657793"></a>
<a href="unfused_rvalue_args.html#fusion.functional.adapters.unfused_rvalue_args.model_of">Model
of</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li><a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a></li>
<li><a href="../concepts/def_callable.html" title=" Deferred
Callable Object">Deferred Callable
Object</a></li>
</ul></div>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">F</span></tt></span></dt>
<dd><p>
A possibly const qualified, unary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a> type or reference type thereof
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">f</span></tt></span></dt>
<dd><p>
An object convertible to <tt class="computeroutput"><span class="identifier">F</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">UR</span></tt></span></dt>
<dd><p>
The type <tt class="computeroutput"><span class="identifier">unfused_rvalue_args</span><span class="special">&lt;</span><span class="identifier">F</span><span class="special">&gt;</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">ur</span></tt></span></dt>
<dd><p>
An instance of <tt class="computeroutput"><span class="identifier">UR</span></tt>,
initialized with <tt class="computeroutput"><span class="identifier">f</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">a0</span></tt>...<tt class="computeroutput"><span class="identifier">aN</span></tt></span></dt>
<dd><p>
Arguments to <tt class="computeroutput"><span class="identifier">ur</span></tt>
</p></dd>
</dl>
</div>
<a name="fusion.functional.adapters.unfused_rvalue_args.expression_semantics"></a><h5>
<a name="id658063"></a>
<a href="unfused_rvalue_args.html#fusion.functional.adapters.unfused_rvalue_args.expression_semantics">Expression
Semantics</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Expression
</p>
</th>
<th>
<p>
Semantics
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">UR</span><span class="special">(</span><span class="identifier">f</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Creates a fused function as described above, initializes the target
function with <tt class="computeroutput"><span class="identifier">f</span></tt>.
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">UR</span><span class="special">()</span></tt>
</p>
</td>
<td>
<p>
Creates a fused function as described above, attempts to use <tt class="computeroutput"><span class="identifier">F</span></tt>'s default constructor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">ur</span><span class="special">(</span><span class="identifier">a0</span></tt>...<tt class="computeroutput"><span class="identifier">aN</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Calls <tt class="computeroutput"><span class="identifier">f</span></tt> with a
<a href="../../sequences.html" title="Sequences">Sequence</a> that contains
references to the arguments <tt class="computeroutput"><span class="identifier">a0</span></tt>...<tt class="computeroutput"><span class="identifier">aN</span></tt>.
</p>
</td>
</tr>
</tbody>
</table></div>
<a name="fusion.functional.adapters.unfused_rvalue_args.example"></a><h5>
<a name="id658330"></a>
<a href="unfused_rvalue_args.html#fusion.functional.adapters.unfused_rvalue_args.example">Example</a>
</h5>
<pre class="programlisting">
<span class="keyword">struct</span> <span class="identifier">sequence_printer</span>
<span class="special">{</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Seq</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">result</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">void</span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Seq</span><span class="special">&gt;</span>
<span class="keyword">void</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">Seq</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">s</span><span class="special">)</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="identifier">s</span> <span class="special">&lt;&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="keyword">void</span> <span class="identifier">try_it</span><span class="special">()</span>
<span class="special">{</span>
<span class="identifier">unfused_rvalue_args</span><span class="special">&lt;</span><span class="identifier">sequence_printer</span><span class="special">&gt;</span> <span class="identifier">print</span><span class="special">;</span>
<span class="identifier">print</span><span class="special">(</span><span class="number">24</span><span class="special">,</span><span class="string">"bottles of beer in"</span><span class="special">,</span><span class="char">'a'</span><span class="special">,</span><span class="string">"box."</span><span class="special">);</span>
<span class="special">}</span>
</pre>
<a name="fusion.functional.adapters.unfused_rvalue_args.see_also"></a><h5>
<a name="id658728"></a>
<a href="unfused_rvalue_args.html#fusion.functional.adapters.unfused_rvalue_args.see_also">See
also</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li><a href="unfused_lvalue_args.html" title="unfused_lvalue_args"><tt class="computeroutput"><span class="identifier">unfused_lvalue_args</span></tt></a></li>
<li><a href="unfused_generic.html" title="unfused_generic"><tt class="computeroutput"><span class="identifier">unfused_generic</span></tt></a></li>
<li><a href="unfused_typed.html" title="unfused_typed"><tt class="computeroutput"><span class="identifier">unfused_typed</span></tt></a></li>
<li><a href="../../support/deduce.html" title="deduce"><tt class="computeroutput"><span class="identifier">deduce</span></tt></a></li>
<li><a href="../../support/deduce_sequence.html" title="deduce_sequence"><tt class="computeroutput"><span class="identifier">deduce_sequence</span></tt></a></li>
</ul></div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
</tr></table>
<hr>
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</div>
<div class="section" lang="en">
<div class="titlepage"><div><div><h4 class="title">
<a name="fusion.functional.adapters.unfused_typed"></a><a href="unfused_typed.html" title="unfused_typed">unfused_typed</a></h4></div></div></div>
<a name="fusion.functional.adapters.unfused_typed.description"></a><h5>
<a name="id658883"></a>
<a href="unfused_typed.html#fusion.functional.adapters.unfused_typed.description">Description</a>
</h5>
<p>
An n-ary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a> adapter template for an unary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a> target function. When called, its arguments are
bundled to a <a href="../../sequences/concepts/random_access_sequence.html" title="Random
Access Sequence">Random
Access Sequence</a> that is passed to the target function object.
</p>
<p>
The call operators of esulting function objects are strictly typed (in
other words, non-templatized) with the types from a <a href="../../sequences.html" title="Sequences">Sequence</a>.
</p>
<p>
The type of the target function is allowed to be const qualified or a reference.
Const qualification is preserved and propagated appropriately (in other
words, only const versions of <tt class="literal">operator()</tt> can be used
if the target function object is const - or, in case the target function
object is held by value, the adapter is const).
</p>
<div class="sidebar"><p>
<span class="inlinemediaobject"><img src="../../../images/note.png" alt="note"></span> For Microsoft Visual C++ 7.1 (Visual Studio 2003)
the detection of the Function Object's const qualification easily causes
an internal error. Therefore the adapter is always treated as if it was
const.
</p></div>
<div class="sidebar"><p>
<span class="inlinemediaobject"><img src="../../../images/tip.png" alt="tip"></span> If the type sequence passed to this template contains
non-reference elements, the element is copied only once - the call operator's
signature is optimized automatically to avoid by-value parameters.
</p></div>
<a name="fusion.functional.adapters.unfused_typed.header"></a><h5>
<a name="id659034"></a>
<a href="unfused_typed.html#fusion.functional.adapters.unfused_typed.header">Header</a>
</h5>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">functional</span><span class="special">/</span><span class="identifier">adapter</span><span class="special">/</span><span class="identifier">unfused_typed</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.functional.adapters.unfused_typed.synopsis"></a><h5>
<a name="id659140"></a>
<a href="unfused_typed.html#fusion.functional.adapters.unfused_typed.synopsis">Synopsis</a>
</h5>
<pre class="programlisting">
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Function</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Sequence</span><span class="special">&gt;</span>
<span class="keyword">class</span> <span class="identifier">unfused_typed</span><span class="special">;</span>
</pre>
<a name="fusion.functional.adapters.unfused_typed.template_parameters"></a><h5>
<a name="id659239"></a>
<a href="unfused_typed.html#fusion.functional.adapters.unfused_typed.template_parameters">Template
parameters</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Description
</p>
</th>
<th>
<p>
Default
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Function</span></tt>
</p>
</td>
<td>
<p>
A unary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a>
</p>
</td>
<td>
<p>
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">Sequence</span></tt>
</p>
</td>
<td>
<p>
A <a href="../../sequences.html" title="Sequences">Sequence</a>
</p>
</td>
<td>
<p>
</p>
</td>
</tr>
</tbody>
</table></div>
<a name="fusion.functional.adapters.unfused_typed.model_of"></a><h5>
<a name="id659397"></a>
<a href="unfused_typed.html#fusion.functional.adapters.unfused_typed.model_of">Model
of</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li><a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a></li>
<li><a href="../concepts/def_callable.html" title=" Deferred
Callable Object">Deferred Callable
Object</a></li>
</ul></div>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">F</span></tt></span></dt>
<dd><p>
A possibly const qualified, unary <a href="../concepts/poly.html" title=" Polymorphic Function
Object">Polymorphic
Function Object</a> type or reference type thereof
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">f</span></tt></span></dt>
<dd><p>
An object convertible to <tt class="computeroutput"><span class="identifier">F</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">S</span></tt></span></dt>
<dd><p>
A <a href="../../sequences.html" title="Sequences">Sequence</a> of parameter types
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">UT</span></tt></span></dt>
<dd><p>
The type <tt class="computeroutput"><span class="identifier">unfused_typed</span><span class="special">&lt;</span><span class="identifier">F</span><span class="special">,</span><span class="identifier">S</span><span class="special">&gt;</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">ut</span></tt></span></dt>
<dd><p>
An instance of <tt class="computeroutput"><span class="identifier">UT</span></tt>,
initialized with <tt class="computeroutput"><span class="identifier">f</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">a0</span></tt>...<tt class="computeroutput"><span class="identifier">aN</span></tt></span></dt>
<dd><p>
Arguments to <tt class="computeroutput"><span class="identifier">ut</span></tt>, convertible
to the types in <tt class="computeroutput"><span class="identifier">S</span></tt>
</p></dd>
</dl>
</div>
<a name="fusion.functional.adapters.unfused_typed.expression_semantics"></a><h5>
<a name="id659720"></a>
<a href="unfused_typed.html#fusion.functional.adapters.unfused_typed.expression_semantics">Expression
Semantics</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Expression
</p>
</th>
<th>
<p>
Semantics
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">UT</span><span class="special">(</span><span class="identifier">f</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Creates a fused function as described above, initializes the target
function with <tt class="computeroutput"><span class="identifier">f</span></tt>.
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">UT</span><span class="special">()</span></tt>
</p>
</td>
<td>
<p>
Creates a fused function as described above, attempts to use <tt class="computeroutput"><span class="identifier">F</span></tt>'s default constructor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">ut</span><span class="special">(</span><span class="identifier">a0</span></tt>...<tt class="computeroutput"><span class="identifier">aN</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Calls <tt class="computeroutput"><span class="identifier">f</span></tt> with an
instance of <tt class="computeroutput"><span class="identifier">S</span></tt> (or
a subsequence of <tt class="computeroutput"><span class="identifier">S</span></tt>
starting at the first element, if fewer arguments are given and
the overload hasn't been disabled) initialized with <tt class="computeroutput"><span class="identifier">a0</span></tt>...<tt class="computeroutput"><span class="identifier">aN</span></tt>.
</p>
</td>
</tr>
</tbody>
</table></div>
<a name="fusion.functional.adapters.unfused_typed.example"></a><h5>
<a name="id660003"></a>
<a href="unfused_typed.html#fusion.functional.adapters.unfused_typed.example">Example</a>
</h5>
<pre class="programlisting">
<span class="keyword">struct</span> <span class="identifier">add_assign</span> <span class="comment">// applies operator+=
</span><span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">void</span> <span class="identifier">result_type</span><span class="special">;</span> <span class="comment">// for simplicity
</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="keyword">void</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">T</span> <span class="special">&amp;</span> <span class="identifier">lhs</span><span class="special">,</span> <span class="identifier">T</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">rhs</span><span class="special">)</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="identifier">lhs</span> <span class="special">+=</span> <span class="identifier">rhs</span><span class="special">;</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Tie</span><span class="special">&gt;</span>
<span class="keyword">class</span> <span class="identifier">fused_parallel_adder</span>
<span class="special">{</span>
<span class="identifier">Tie</span> <span class="identifier">tie_dest</span><span class="special">;</span>
<span class="keyword">public</span><span class="special">:</span>
<span class="keyword">explicit</span> <span class="identifier">fused_parallel_adder</span><span class="special">(</span><span class="identifier">Tie</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">dest</span><span class="special">)</span>
<span class="special">:</span> <span class="identifier">tie_dest</span><span class="special">(</span><span class="identifier">dest</span><span class="special">)</span>
<span class="special">{</span> <span class="special">}</span>
<span class="keyword">typedef</span> <span class="keyword">void</span> <span class="identifier">result_type</span><span class="special">;</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Seq</span><span class="special">&gt;</span>
<span class="keyword">void</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">Seq</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">s</span><span class="special">)</span> <span class="keyword">const</span>
<span class="special">{</span>
<span class="identifier">for_each</span><span class="special">(</span> <span class="identifier">zip</span><span class="special">(</span><span class="identifier">tie_dest</span><span class="special">,</span><span class="identifier">s</span><span class="special">),</span> <span class="identifier">fused</span><span class="special">&lt;</span><span class="identifier">add_assign</span><span class="special">&gt;()</span> <span class="special">);</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="comment">// accepts a tie and creates a typed function object from it
</span><span class="keyword">struct</span> <span class="identifier">fused_parallel_adder_maker</span>
<span class="special">{</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Sig</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">result</span><span class="special">;</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Self</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Seq</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">result</span><span class="special">&lt;</span> <span class="identifier">Self</span><span class="special">(</span><span class="identifier">Seq</span><span class="special">)</span> <span class="special">&gt;</span>
<span class="special">{</span>
<span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">remove_reference</span><span class="special">&lt;</span><span class="identifier">Seq</span><span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">seq</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">unfused_typed</span><span class="special">&lt;</span> <span class="identifier">fused_parallel_adder</span><span class="special">&lt;</span><span class="identifier">seq</span><span class="special">&gt;,</span>
<span class="keyword">typename</span> <span class="identifier">mpl</span><span class="special">::</span><span class="identifier">transform</span><span class="special">&lt;</span><span class="identifier">seq</span><span class="special">,</span> <span class="identifier">remove_reference</span><span class="special">&lt;</span><span class="identifier">_</span><span class="special">&gt;</span> <span class="special">&gt;::</span><span class="identifier">type</span> <span class="special">&gt;</span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Seq</span><span class="special">&gt;</span>
<span class="keyword">typename</span> <span class="identifier">result</span><span class="special">&lt;</span> <span class="keyword">void</span><span class="special">(</span><span class="identifier">Seq</span><span class="special">)</span> <span class="special">&gt;::</span><span class="identifier">type</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">Seq</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">tie</span><span class="special">)</span>
<span class="special">{</span>
<span class="keyword">return</span> <span class="keyword">typename</span> <span class="identifier">result</span><span class="special">&lt;</span> <span class="keyword">void</span><span class="special">(</span><span class="identifier">Seq</span><span class="special">)</span> <span class="special">&gt;::</span><span class="identifier">type</span><span class="special">(</span>
<span class="identifier">fused_parallel_adder</span><span class="special">&lt;</span><span class="identifier">Seq</span><span class="special">&gt;(</span><span class="identifier">tie</span><span class="special">)</span> <span class="special">);</span>
<span class="special">}</span>
<span class="special">};</span>
<span class="identifier">unfused_lvalue_args</span><span class="special">&lt;</span><span class="identifier">fused_parallel_adder_maker</span><span class="special">&gt;</span> <span class="identifier">parallel_add</span><span class="special">;</span>
<span class="keyword">void</span> <span class="identifier">try_it</span><span class="special">()</span>
<span class="special">{</span>
<span class="keyword">int</span> <span class="identifier">a</span> <span class="special">=</span> <span class="number">2</span><span class="special">;</span> <span class="keyword">char</span> <span class="identifier">b</span> <span class="special">=</span> <span class="char">'X'</span><span class="special">;</span>
<span class="comment">// the second call is strictly typed with the types deduced from the
</span> <span class="comment">// first call
</span> <span class="identifier">parallel_add</span><span class="special">(</span><span class="identifier">a</span><span class="special">,</span><span class="identifier">b</span><span class="special">)(</span><span class="number">3</span><span class="special">,</span><span class="number">2</span><span class="special">);</span>
<span class="identifier">parallel_add</span><span class="special">(</span><span class="identifier">a</span><span class="special">,</span><span class="identifier">b</span><span class="special">)(</span><span class="number">3</span><span class="special">);</span>
<span class="identifier">parallel_add</span><span class="special">(</span><span class="identifier">a</span><span class="special">,</span><span class="identifier">b</span><span class="special">)();</span>
<span class="identifier">assert</span><span class="special">(</span><span class="identifier">a</span> <span class="special">==</span> <span class="number">8</span> <span class="special">&amp;&amp;</span> <span class="identifier">b</span> <span class="special">==</span> <span class="char">'Z'</span><span class="special">);</span>
<span class="special">}</span>
</pre>
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<li><a href="unfused_generic.html" title="unfused_generic"><tt class="computeroutput"><span class="identifier">unfused_generic</span></tt></a></li>
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<li><a href="unfused_rvalue_args.html" title="unfused_rvalue_args"><tt class="computeroutput"><span class="identifier">unfused_rvalue_args</span></tt></a></li>
<li><a href="../../support/deduce.html" title="deduce"><tt class="computeroutput"><span class="identifier">deduce</span></tt></a></li>
<li><a href="../../support/deduce_sequence.html" title="deduce_sequence"><tt class="computeroutput"><span class="identifier">deduce_sequence</span></tt></a></li>
</ul></div>
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<dt><span class="section"><a href="concepts/callable.html"> Callable Object</a></span></dt>
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<a name="fusion.functional.concepts.callable.description"></a><h5>
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</h5>
<p>
A pointer to a function, a pointer to member function, a pointer to member
data, or a class type whose objects can appear immediately to the left
of a function call operator.
</p>
<a name="fusion.functional.concepts.callable.models"></a><h5>
<a name="id641717"></a>
<a href="callable.html#fusion.functional.concepts.callable.models">Models</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li>
function pointer types
</li>
<li>
member (function or data) pointer types
</li>
<li>
all kinds of function objects
</li>
</ul></div>
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<a href="callable.html" title=" Callable Object">Callable Object</a>
types that work with <a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top">Boost.ResultOf</a>
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<a name="fusion.functional.concepts.def_callable.refinement_of"></a><h5>
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<div class="itemizedlist"><ul type="disc"><li><a href="callable.html" title=" Callable Object">Callable Object</a></li></ul></div>
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note Once C++ supports the <tt class="literal">decltype</tt> keyword, all models
of <a href="callable.html" title=" Callable Object">Callable Object</a>
will also be models of <a href="def_callable.html" title=" Deferred
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<dt><span class="term"><tt class="computeroutput"><span class="identifier">F</span></tt></span></dt>
<dd><p>
A possibly const qualified Deferred Callable Object type
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">A1</span>
<span class="special">...</span><span class="identifier">AN</span></tt></span></dt>
<dd><p>
Argument types
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">a1</span>
<span class="special">...</span><span class="identifier">aN</span></tt></span></dt>
<dd><p>
Objects or references to objects with types <tt class="computeroutput"><span class="identifier">A1</span>
<span class="special">...</span><span class="identifier">AN</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">T1</span>
<span class="special">...</span><span class="identifier">TN</span></tt></span></dt>
<dd><p>
<tt class="computeroutput"><span class="identifier">T</span></tt>i is <tt class="computeroutput"><span class="identifier">A</span></tt>i <tt class="computeroutput"><span class="special">&amp;</span></tt>
if <tt class="computeroutput"><span class="identifier">a</span></tt>i is an LValue,
same as <tt class="computeroutput"><span class="identifier">A</span></tt>i, otherwise
</p></dd>
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<a href="def_callable.html#fusion.functional.concepts.def_callable.expression_requirements">Expression
requirements</a>
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<div class="informaltable"><table class="table">
<colgroup>
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Expression
</p>
</th>
<th>
<p>
Type
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<a href="http://www.boost.org/libs/utility/utility.htm#result_of" target="_top"><tt class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">result_of</span></tt></a><tt class="computeroutput"><span class="special">&lt;</span> <span class="identifier">F</span><span class="special">(</span><span class="identifier">T1</span>
<span class="special">...</span><span class="identifier">TN</span><span class="special">)</span> <span class="special">&gt;::</span><span class="identifier">type</span></tt>
</p>
</td>
<td>
<p>
Result of a call with <tt class="computeroutput"><span class="identifier">A1</span>
<span class="special">...</span><span class="identifier">AN</span></tt>-typed
arguments
</p>
</td>
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<a name="fusion.functional.concepts.def_callable.models"></a><h5>
<a name="id642736"></a>
<a href="def_callable.html#fusion.functional.concepts.def_callable.models">Models</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li>
<a href="poly.html" title=" Polymorphic Function
Object">Polymorphic Function
Object</a> types
</li>
<li>
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</li>
</ul></div>
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A non-member-pointer <a href="def_callable.html" title=" Deferred
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<a name="fusion.functional.concepts.poly.refinement_of"></a><h5>
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Object</a></li>
</ul></div>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">F</span></tt></span></dt>
<dd><p>
A possibly const-qualified Polymorphic Function Object type
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">f</span></tt></span></dt>
<dd><p>
An object or reference to an object of type F
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">A1</span>
<span class="special">...</span><span class="identifier">AN</span></tt></span></dt>
<dd><p>
Argument types
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">a1</span>
<span class="special">...</span><span class="identifier">aN</span></tt></span></dt>
<dd><p>
Objects or references to objects with types <tt class="computeroutput"><span class="identifier">A1</span>
<span class="special">...</span><span class="identifier">AN</span></tt>
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">T1</span>
<span class="special">...</span><span class="identifier">TN</span></tt></span></dt>
<dd><p>
<tt class="computeroutput"><span class="identifier">T</span></tt>i is <tt class="computeroutput"><span class="identifier">A</span></tt>i <tt class="computeroutput"><span class="special">&amp;</span></tt>
if <tt class="computeroutput"><span class="identifier">a</span></tt>i is an LValue,
same as <tt class="computeroutput"><span class="identifier">A</span></tt>i, otherwise
</p></dd>
</dl>
</div>
<a name="fusion.functional.concepts.poly.expression_requirements"></a><h5>
<a name="id643131"></a>
<a href="poly.html#fusion.functional.concepts.poly.expression_requirements">Expression
requirements</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Expression
</p>
</th>
<th>
<p>
Return Type
</p>
</th>
<th>
<p>
Runtime Complexity
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">a1</span><span class="special">,</span>
<span class="special">...</span><span class="identifier">aN</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
<tt class="computeroutput"><span class="identifier">result_of</span><span class="special">&lt;</span>
<span class="identifier">F</span><span class="special">(</span><span class="identifier">T1</span><span class="special">,</span>
<span class="special">...</span><span class="identifier">TN</span><span class="special">)</span> <span class="special">&gt;::</span><span class="identifier">type</span></tt>
</p>
</td>
<td>
<p>
Unspecified
</p>
</td>
</tr></tbody>
</table></div>
<a name="fusion.functional.concepts.poly.models"></a><h5>
<a name="id643329"></a>
<a href="poly.html#fusion.functional.concepts.poly.models">Models</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li>
function pointers
</li>
<li>
function objects of the Standard Library
</li>
<li>
all Fusion <a href="../adapters.html" title=" Adapters">functional adapters</a>
</li>
</ul></div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
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<html>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title> Regular Callable
Object</title>
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<div class="titlepage"><div><div><h4 class="title">
<a name="fusion.functional.concepts.reg_callable"></a><a href="reg_callable.html" title=" Regular Callable
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<a name="fusion.functional.concepts.reg_callable.description"></a><h5>
<a name="id641778"></a>
<a href="reg_callable.html#fusion.functional.concepts.reg_callable.description">Description</a>
</h5>
<p>
A non-member-pointer <a href="callable.html" title=" Callable Object">Callable
Object</a> type: A pointer to a function or a class type whose objects
can appear immediately to the left of a function call operator.
</p>
<a name="fusion.functional.concepts.reg_callable.refinement_of"></a><h5>
<a name="id641819"></a>
<a href="reg_callable.html#fusion.functional.concepts.reg_callable.refinement_of">Refinement
of</a>
</h5>
<div class="itemizedlist"><ul type="disc"><li><a href="callable.html" title=" Callable Object">Callable Object</a></li></ul></div>
<div class="variablelist">
<p class="title"><b>Notation</b></p>
<dl>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">F</span></tt></span></dt>
<dd><p>
A possibly const qualified Deferred Callable Object type
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">f</span></tt></span></dt>
<dd><p>
An object or reference to an object of type F
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">A1</span>
<span class="special">...</span><span class="identifier">AN</span></tt></span></dt>
<dd><p>
Argument types
</p></dd>
<dt><span class="term"><tt class="computeroutput"><span class="identifier">a1</span>
<span class="special">...</span><span class="identifier">aN</span></tt></span></dt>
<dd><p>
Objects or references to objects with types <tt class="computeroutput"><span class="identifier">A1</span>
<span class="special">...</span><span class="identifier">AN</span></tt>
</p></dd>
</dl>
</div>
<a name="fusion.functional.concepts.reg_callable.expression_requirements"></a><h5>
<a name="id642005"></a>
<a href="reg_callable.html#fusion.functional.concepts.reg_callable.expression_requirements">Expression
requirements</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Expression
</p>
</th>
<th>
<p>
Return Type
</p>
</th>
<th>
<p>
Runtime Complexity
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">a1</span><span class="special">,</span>
<span class="special">...</span><span class="identifier">aN</span><span class="special">)</span></tt>
</p>
</td>
<td>
<p>
Unspecified
</p>
</td>
<td>
<p>
Unspecified
</p>
</td>
</tr></tbody>
</table></div>
<a name="fusion.functional.concepts.reg_callable.models"></a><h5>
<a name="id642141"></a>
<a href="reg_callable.html#fusion.functional.concepts.reg_callable.models">Models</a>
</h5>
<div class="itemizedlist"><ul type="disc">
<li>
function pointer types
</li>
<li>
all kinds of function objects
</li>
</ul></div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
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<dt><span class="section"><a href="generation/functions.html">Functions</a></span></dt>
<dt><span class="section"><a href="generation/metafunctions.html">Metafunctions</a></span></dt>
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<a name="fusion.functional.generation.functions"></a><a href="functions.html" title="Functions">Functions</a></h4></div></div></div>
<div class="toc"><dl>
<dt><span class="section"><a href="functions/mk_fused.html">
make_fused</a></span></dt>
<dt><span class="section"><a href="functions/mk_fused_proc.html">
make_fused_procedure</a></span></dt>
<dt><span class="section"><a href="functions/mk_fused_fobj.html">
make_fused_function_object</a></span></dt>
<dt><span class="section"><a href="functions/mk_unfused_genrc.html">
make_unfused_generic</a></span></dt>
<dt><span class="section"><a href="functions/mk_unfused_lvargs.html">
make_unfused_lvalue_args</a></span></dt>
<dt><span class="section"><a href="functions/mk_unfused_rvargs.html">
make_unfused_rvalue_args</a></span></dt>
</dl></div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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make_fused</title>
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<div class="section" lang="en">
<div class="titlepage"><div><div><h5 class="title">
<a name="fusion.functional.generation.functions.mk_fused"></a><a href="mk_fused.html" title="
make_fused">
make_fused</a></h5></div></div></div>
<a name="fusion.functional.generation.functions.mk_fused.description"></a><h6>
<a name="id661691"></a>
<a href="mk_fused.html#fusion.functional.generation.functions.mk_fused.description">Description</a>
</h6>
<p>
Creates a <a href="../../adapters/fused.html" title="fused"><tt class="computeroutput"><span class="identifier">fused</span></tt></a> adapter for a given <a href="../../concepts/def_callable.html" title=" Deferred
Callable Object">Deferred Callable Object</a>.
The usual <a href="../../../notes.html#fusion.notes.element_conversion"><span class="emphasis"><em>element
conversion</em></span></a> is applied to the target function.
</p>
<a name="fusion.functional.generation.functions.mk_fused.synopsis"></a><h6>
<a name="id661759"></a>
<a href="mk_fused.html#fusion.functional.generation.functions.mk_fused.synopsis">Synopsis</a>
</h6>
<pre class="programlisting">
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">F</span><span class="special">&gt;</span>
<span class="keyword">inline</span> <span class="keyword">typename</span> <a href="../metafunctions/mk_fused.html" title="
make_fused"><tt class="computeroutput"><span class="identifier">make_fused</span></tt></a><span class="special">&lt;</span><span class="identifier">F</span><span class="special">&gt;::</span><span class="identifier">type</span>
<span class="identifier">make_fused</span><span class="special">(</span><span class="identifier">F</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">f</span><span class="special">);</span>
</pre>
<a name="fusion.functional.generation.functions.mk_fused.parameters"></a><h6>
<a name="id661913"></a>
<a href="mk_fused.html#fusion.functional.generation.functions.mk_fused.parameters">Parameters</a>
</h6>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Parameter
</p>
</th>
<th>
<p>
Requirement
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<tt class="computeroutput"><span class="identifier">f</span></tt>
</p>
</td>
<td>
<p>
Model of <a href="../../concepts/def_callable.html" title=" Deferred
Callable Object">Deferred
Callable Object</a>
</p>
</td>
<td>
<p>
The function to transform.
</p>
</td>
</tr></tbody>
</table></div>
<a name="fusion.functional.generation.functions.mk_fused.expression_semantics"></a><h6>
<a name="id662030"></a>
<a href="mk_fused.html#fusion.functional.generation.functions.mk_fused.expression_semantics">Expression
Semantics</a>
</h6>
<pre class="programlisting">
<span class="identifier">make_fused</span><span class="special">(</span><span class="identifier">f</span><span class="special">);</span>
</pre>
<p>
<span class="bold"><b>Return type</b></span>: A specialization of <a href="../../adapters/fused.html" title="fused"><tt class="computeroutput"><span class="identifier">fused</span></tt></a>.
</p>
<p>
<span class="bold"><b>Semantics</b></span>: Returns a <a href="../../adapters/fused.html" title="fused"><tt class="computeroutput"><span class="identifier">fused</span></tt></a> adapter for <tt class="computeroutput"><span class="identifier">f</span></tt>.
</p>
<a name="fusion.functional.generation.functions.mk_fused.header"></a><h6>
<a name="id662155"></a>
<a href="mk_fused.html#fusion.functional.generation.functions.mk_fused.header">Header</a>
</h6>
<pre class="programlisting">
<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">functional</span><span class="special">/</span><span class="identifier">generation</span><span class="special">/</span><span class="identifier">make_fused</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
</pre>
<a name="fusion.functional.generation.functions.mk_fused.example"></a><h6>
<a name="id662262"></a>
<a href="mk_fused.html#fusion.functional.generation.functions.mk_fused.example">Example</a>
</h6>
<pre class="programlisting">
<span class="keyword">float</span> <span class="identifier">sub</span><span class="special">(</span><span class="keyword">float</span> <span class="identifier">a</span><span class="special">,</span> <span class="keyword">float</span> <span class="identifier">b</span><span class="special">)</span> <span class="special">{</span> <span class="keyword">return</span> <span class="identifier">a</span> <span class="special">-</span> <span class="identifier">b</span><span class="special">;</span> <span class="special">}</span>
<span class="keyword">void</span> <span class="identifier">try_it</span><span class="special">()</span>
<span class="special">{</span>
<a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">float</span><span class="special">&gt;</span> <span class="identifier">a</span><span class="special">(</span><span class="number">2</span><span class="special">,</span><span class="number">2.0f</span><span class="special">);</span>
<a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span><span class="keyword">float</span><span class="special">&gt;</span> <span class="identifier">b</span><span class="special">(</span><span class="number">1</span><span class="special">,</span><span class="number">1.5f</span><span class="special">);</span>
<a href="../../../sequences/containers/vector.html" title="vector"><tt class="computeroutput"><span class="identifier">vector</span></tt></a><span class="special">&lt;</span><span class="keyword">float</span><span class="special">,</span><span class="keyword">float</span><span class="special">&gt;</span> <span class="identifier">c</span><span class="special">(</span><span class="number">1.0f</span><span class="special">,</span><span class="number">0.5f</span><span class="special">);</span>
<span class="identifier">assert</span><span class="special">(</span><span class="identifier">c</span> <span class="special">==</span> <a href="../../../algorithms/transformation/functions/transform.html" title="transform"><tt class="computeroutput"><span class="identifier">transform</span></tt></a><span class="special">(</span><a href="../../../algorithms/transformation/functions/zip.html" title="zip"><tt class="computeroutput"><span class="identifier">zip</span></tt></a><span class="special">(</span><span class="identifier">a</span><span class="special">,</span><span class="identifier">b</span><span class="special">),</span> <span class="identifier">make_fused</span><span class="special">(&amp;</span> <span class="identifier">sub</span><span class="special">)));</span>
<span class="identifier">assert</span><span class="special">(</span><span class="identifier">c</span> <span class="special">==</span> <a href="../../../algorithms/transformation/functions/transform.html" title="transform"><tt class="computeroutput"><span class="identifier">transform</span></tt></a><span class="special">(</span><a href="../../../algorithms/transformation/functions/zip.html" title="zip"><tt class="computeroutput"><span class="identifier">zip</span></tt></a><span class="special">(</span><span class="identifier">a</span><span class="special">,</span><span class="identifier">b</span><span class="special">),</span> <span class="identifier">make_fused</span><span class="special">(</span><a href="http://www.sgi.com/tech/stl/minus.html" target="_top"><tt class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">minus</span></tt></a><span class="special">&lt;</span><span class="keyword">float</span><span class="special">&gt;())));</span>
<span class="special">}</span>
</pre>
<a name="fusion.functional.generation.functions.mk_fused.see_also"></a><h6>
<a name="id662867"></a>
<a href="mk_fused.html#fusion.functional.generation.functions.mk_fused.see_also">See
also</a>
</h6>
<div class="itemizedlist"><ul type="disc">
<li><a href="../../adapters/fused.html" title="fused"><tt class="computeroutput"><span class="identifier">fused</span></tt></a></li>
<li><a href="../../../support/deduce.html" title="deduce"><tt class="computeroutput"><span class="identifier">deduce</span></tt></a></li>
<li><a href="../metafunctions/mk_fused.html" title="
make_fused"><tt class="computeroutput"><span class="identifier">make_fused</span></tt></a></li>
</ul></div>
</div>
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<td align="right"><small>Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</small></td>
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