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< title > fused_procedure</ title >
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< 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 >
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< a name = "id663113" ></ a >
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< 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 = "../../sequence/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 >
< p >
/functional/adapter/fused_procedure.hpp>
</ p >
< a name = "fusion.functional.adapters.fused_procedure.synopsis" ></ a >< h5 >
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< a name = "id663277" ></ a >
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< 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" > < </ span >< span class = "keyword" > typename</ span > < span class = "identifier" > Function</ span >< span class = "special" > > </ 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 >
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< a name = "id663358" ></ a >
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< 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 >
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< a name = "id663473" ></ a >
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< 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 = "../../sequence.html" title = "Sequence" > 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" > < </ span >< span class = "identifier" > R</ span >< span class = "special" > > </ span ></ tt >
</ p ></ dd >
</ dl >
</ div >
< a name = "fusion.functional.adapters.fused_procedure.expression_semantics" ></ a >< h5 >
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< a name = "id663693" ></ a >
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< 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" > < </ span >< span class = "identifier" > R</ span >< span class = "special" > > (</ 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" > < </ span >< span class = "identifier" > R</ 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" > 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 >
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< a name = "id663950" ></ a >
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< 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" > < </ 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" > > </ 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" > & </ span > < span class = "identifier" > s</ span >< span class = "special" > ,</ span > < span class = "identifier" > Func</ span > < span class = "keyword" > const</ span > < span class = "special" > & </ span > < span class = "identifier" > f</ span >< span class = "special" > )</ span >
< span class = "special" > {</ span >
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< a href = "../../algorithm/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 = "../../view/zip_view.html" title = "zip_view" >< tt class = "computeroutput" >< span class = "identifier" > zip_view</ span ></ tt ></ a >< span class = "special" > < </ span >< span class = "identifier" > SequenceOfSequences</ span >< span class = "special" > > (</ span >< span class = "identifier" > s</ span >< span class = "special" > ),</ span >
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< span class = "identifier" > fused_procedure</ span >< span class = "special" > < </ span >< span class = "identifier" > Func</ span > < span class = "keyword" > const</ span > < span class = "special" > &> (</ span >< span class = "identifier" > f</ span >< span class = "special" > ));</ span >
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< span class = "special" > }</ span >
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< span class = "keyword" > void</ span > < span class = "identifier" > try_it</ span >< span class = "special" > ()</ span >
< span class = "special" > {</ span >
< a href = "../../container/vector.html" title = "vector" >< tt class = "computeroutput" >< span class = "identifier" > vector</ span ></ tt ></ a >< span class = "special" > < </ span >< span class = "keyword" > int</ span >< span class = "special" > ,</ span >< span class = "keyword" > float</ span >< span class = "special" > > </ 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 = "../../container/vector.html" title = "vector" >< tt class = "computeroutput" >< span class = "identifier" > vector</ span ></ tt ></ a >< span class = "special" > < </ span >< span class = "keyword" > int</ span >< span class = "special" > ,</ span >< span class = "keyword" > float</ span >< span class = "special" > > </ 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 = "../../container/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 = "../../container/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 >
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< a name = "id664558" ></ a >
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< 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 >
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< td align = "right" >< div class = "copyright-footer" > Copyright © 2001-2007 Joel de Guzman, Dan Marsden, Tobias
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Schwinger< p >
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at < a href = "http://www.boost.org/LICENSE_1_0.txt" target = "_top" > http://www.boost.org/LICENSE_1_0.txt</ a > )
2007-11-16 08:03:15 +00:00
</ p >
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