2007-11-06 12:13:52 +00:00
< html >
< head >
< meta http-equiv = "Content-Type" content = "text/html; charset=ISO-8859-1" >
< title > fused_function_object</ title >
2007-11-07 16:22:38 +00:00
< link rel = "stylesheet" href = "../../../../../../../doc/html/boostbook.css" type = "text/css" >
2007-11-06 12:13:52 +00:00
< meta name = "generator" content = "DocBook XSL Stylesheets V1.66.1" >
< link rel = "start" href = "../../../index.html" title = "Chapter >
< link rel = "up" href = "../adapters.html" title = " Adapters" >
< link rel = "prev" href = "fused_procedure.html" title = "fused_procedure" >
< link rel = "next" href = "unfused_generic.html" title = "unfused_generic" >
</ 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 >
< td align = "center" >< a href = "../../../../../../../index.htm" > Home</ a ></ td >
< td align = "center" >< a href = "../../../../../../libraries.htm" > Libraries</ a ></ td >
< td align = "center" >< a href = "../../../../../../../people/people.htm" > People</ a ></ td >
< td align = "center" >< a href = "../../../../../../../more/faq.htm" > FAQ</ a ></ td >
< td align = "center" >< a href = "../../../../../../../more/index.htm" > More</ a ></ 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 >
</ div >
< 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 >
2007-12-21 22:19:06 +00:00
< a name = "id664673" ></ a >
2007-11-06 12:13:52 +00:00
< 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 = "../../sequence/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 >
< p >
/functional/adapter/fused_function_object.hpp>
</ p >
< a name = "fusion.functional.adapters.fused_function_object.synopsis" ></ a >< h5 >
2007-12-21 22:19:06 +00:00
< a name = "id664755" ></ a >
2007-11-06 12:13:52 +00:00
< 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" > < </ span >< span class = "keyword" > class</ span > < span class = "identifier" > Function</ span >< span class = "special" > > </ 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 >
2007-12-21 22:19:06 +00:00
< a name = "id664839" ></ a >
2007-11-06 12:13:52 +00:00
< 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 >
2007-12-21 22:19:06 +00:00
< a name = "id664956" ></ a >
2007-11-06 12:13:52 +00:00
< 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 = "../../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_function_object.expression_semantics" ></ a >< h5 >
2007-12-21 22:19:06 +00:00
< a name = "id665176" ></ a >
2007-11-06 12:13:52 +00:00
< 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" > < </ 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_function_object</ 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_function_object.example" ></ a >< h5 >
2007-12-21 22:19:06 +00:00
< a name = "id665433" ></ a >
2007-11-06 12:13:52 +00:00
< 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" > < </ 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" > > </ span >
< span class = "keyword" > typename</ span > < a href = "../../algorithm/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" > < </ span > < span class = "identifier" > zip_view</ span >< span class = "special" > < </ span >< span class = "identifier" > SeqOfSeqs</ span >< span class = "special" > > </ span > < span class = "keyword" > const</ span >< span class = "special" > ,</ span >
< span class = "identifier" > fused_function_object</ span >< span class = "special" > < </ span >< span class = "identifier" > Func</ span > < span class = "keyword" > const</ span > < span class = "special" > &> </ span > < span class = "special" > > ::</ 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" > & </ 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 >
2007-11-07 16:22:38 +00:00
< span class = "keyword" > return</ span > < a href = "../../algorithm/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" > < </ span >< span class = "identifier" > SeqOfSeqs</ span >< span class = "special" > > (</ span >< span class = "identifier" > s</ span >< span class = "special" > ),</ span >
2007-11-06 12:13:52 +00:00
< span class = "identifier" > fused_function_object</ 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 >
2007-11-07 16:22:38 +00:00
< span class = "special" > }</ span >
2007-11-06 12:13:52 +00:00
< span class = "keyword" > struct</ span > < span class = "identifier" > sub</ span >
< span class = "special" > {</ span >
< span class = "keyword" > template</ span > < span class = "special" > < </ span >< span class = "keyword" > typename</ span > < span class = "identifier" > Sig</ span >< span class = "special" > > </ span >
< span class = "keyword" > struct</ span > < span class = "identifier" > result</ span >< span class = "special" > ;</ span >
< span class = "keyword" > template</ span > < span class = "special" > < </ 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" > > </ span >
2007-11-07 16:22:38 +00:00
< span class = "keyword" > struct</ span > < span class = "identifier" > result</ span >< span class = "special" > < </ 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" > > </ span >
2007-11-06 12:13:52 +00:00
< span class = "special" > {</ span > < span class = "keyword" > typedef</ span > < span class = "keyword" > typename</ span > < span class = "identifier" > remove_reference</ span >< span class = "special" > < </ span >< span class = "identifier" > T</ span >< span class = "special" > > ::</ 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" > < </ span >< span class = "keyword" > typename</ span > < span class = "identifier" > T</ span >< span class = "special" > > </ 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 = "../../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 >
< 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" > 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 = "../../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" > sub</ span >< span class = "special" > ()));</ span >
< span class = "special" > }</ span >
</ pre >
< a name = "fusion.functional.adapters.fused_function_object.see_also" ></ a >< h5 >
2007-12-21 22:19:06 +00:00
< a name = "id666490" ></ a >
2007-11-06 12:13:52 +00:00
< 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 >
2007-11-16 08:03:15 +00:00
< td align = "right" >< div class = "copyright-footer" > Copyright © 2001-2007 Joel de Guzman, Dan Marsden, Tobias
2007-11-07 16:22:38 +00:00
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 >
</ div ></ td >
2007-11-06 12:13:52 +00:00
</ 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 >
</ div >
</ body >
</ html >
