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< div class = "section" lang = "en" >
< 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 >
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< a name = "id1209464" ></ a >
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< 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 nested < code class = "computeroutput" >< span class = "identifier" > result</ span ></ code > metafunction
does not define a < code class = "computeroutput" >< span class = "identifier" > type</ span ></ code >
member for target functions of non-class type whose arity is not satisfied
by the size of the sequence.
</ 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 < code class = "literal" > operator()</ code > 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 - 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 < code class = "literal" > this</ code > , 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 < code class = "literal" > get_pointer</ code > function must
be defined (Boost provides this function for < code class = "literal" > std::auto_ptr</ code >
and < a href = "http://www.boost.org/libs/smart_ptr/smart_ptr.hpp" target = "_top" >< code class = "computeroutput" >< span class = "identifier" > boost</ span >< span class = "special" > ::</ span >< span class = "identifier" > shared_ptr</ span ></ code ></ a > ).
</ p >
< a name = "fusion.functional.adapters.fused.header" ></ a >< h5 >
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< a name = "id1209607" ></ a >
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< a href = "fused.html#fusion.functional.adapters.fused.header" > Header</ a >
</ h5 >
< pre class = "programlisting" >
< span class = "preprocessor" > #include</ 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" > 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" > > </ span >
</ pre >
< a name = "fusion.functional.adapters.fused.synopsis" ></ a >< h5 >
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< a name = "id1209698" ></ a >
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< a href = "fused.html#fusion.functional.adapters.fused.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</ span >< span class = "special" > ;</ span >
</ pre >
< a name = "fusion.functional.adapters.fused.template_parameters" ></ a >< h5 >
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< a name = "id1209767" ></ a >
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< 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 > Parameter</ th >
< th > Description</ th >
< th > Default</ th >
</ tr ></ thead >
< tbody >< tr >
< td >< code class = "computeroutput" >< span class = "identifier" > Function</ span ></ code ></ td >
< td > A
< a href = "../concepts/def_callable.html" title = " Deferred
Callable Object" > Deferred
Callable Object</ a >
</ td >
< td > </ td >
</ tr ></ tbody >
</ table ></ div >
< a name = "fusion.functional.adapters.fused.model_of" ></ a >< h5 >
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< a name = "id1209843" ></ a >
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< 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" >< code class = "computeroutput" >< span class = "identifier" > R</ span ></ code ></ span ></ dt >
< dd >
A possibly const qualified < a href = "../concepts/def_callable.html" title = " Deferred
Callable Object" > Deferred
Callable Object</ a > type or reference type thereof
</ dd >
< dt >< span class = "term" >< code class = "computeroutput" >< span class = "identifier" > r</ span ></ code ></ span ></ dt >
< dd >
An object convertible to < code class = "computeroutput" >< span class = "identifier" > R</ span ></ code >
</ dd >
< dt >< span class = "term" >< code class = "computeroutput" >< span class = "identifier" > s</ span ></ code ></ span ></ dt >
< dd >
A < a href = "../../sequences.html" title = "Sequences" > Sequence</ a > of arguments that
are accepted by < code class = "computeroutput" >< span class = "identifier" > r</ span ></ code >
</ dd >
< dt >< span class = "term" >< code class = "computeroutput" >< span class = "identifier" > f</ span ></ code ></ span ></ dt >
< dd >
An instance of < code class = "computeroutput" >< span class = "identifier" > fused</ span >< span class = "special" > < </ span >< span class = "identifier" > R</ span >< span class = "special" > > </ span ></ code >
</ dd >
</ dl >
</ div >
< a name = "fusion.functional.adapters.fused.expression_semantics" ></ a >< h5 >
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< a name = "id1210015" ></ a >
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< 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 > Expression</ th >
< th > Semantics</ th >
</ tr ></ thead >
< tbody >
< tr >
< td >< code class = "computeroutput" >< span class = "identifier" > fused</ span >< span class = "special" > < </ span >< span class = "identifier" > R</ span >< span class = "special" > > (</ span >< span class = "identifier" > r</ span >< span class = "special" > )</ span ></ code ></ td >
< td > Creates
a fused function as described above, initializes the target function
with < code class = "computeroutput" >< span class = "identifier" > r</ span ></ code > .</ td >
</ tr >
< tr >
< td >< code class = "computeroutput" >< span class = "identifier" > fused</ span >< span class = "special" > < </ span >< span class = "identifier" > R</ span >< span class = "special" > > ()</ span ></ code ></ td >
< td > Creates
a fused function as described above, attempts to use < code class = "computeroutput" >< span class = "identifier" > R</ span ></ code > 's default constructor.</ td >
</ tr >
< tr >
< td >< code class = "computeroutput" >< span class = "identifier" > f</ span >< span class = "special" > (</ span >< span class = "identifier" > s</ span >< span class = "special" > )</ span ></ code ></ td >
< td > Calls
< code class = "computeroutput" >< span class = "identifier" > r</ span ></ code > with the elements
in < code class = "computeroutput" >< span class = "identifier" > s</ span ></ code > as its arguments.</ td >
</ tr >
</ tbody >
</ table ></ div >
< a name = "fusion.functional.adapters.fused.example" ></ a >< h5 >
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< a name = "id1210197" ></ a >
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< a href = "fused.html#fusion.functional.adapters.fused.example" > Example</ a >
</ h5 >
< pre class = "programlisting" >
< span class = "identifier" > fused</ span >< span class = "special" > < </ span > < a href = "http://www.sgi.com/tech/stl/plus.html" target = "_top" >< code class = "computeroutput" >< span class = "identifier" > std</ span >< span class = "special" > ::</ span >< span class = "identifier" > plus</ span ></ code ></ a >< span class = "special" > < </ span >< span class = "keyword" > long</ span >< span class = "special" > > </ span > < span class = "special" > > </ span > < span class = "identifier" > f</ span >< span class = "special" > ;</ span >
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< 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" >< code class = "computeroutput" >< span class = "identifier" > make_vector</ span ></ code ></ 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 >
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</ pre >
< a name = "fusion.functional.adapters.fused.see_also" ></ a >< h5 >
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< a name = "id1210353" ></ a >
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< 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" >< code class = "computeroutput" >< span class = "identifier" > fused_procedure</ span ></ code ></ a ></ li >
< li >< a href = "fused_function_object.html" title = "fused_function_object" >< code class = "computeroutput" >< span class = "identifier" > fused_function_object</ span ></ code ></ a ></ li >
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< li >< a href = "../invocation/functions/invoke.html" title = "invoke" >< code class = "computeroutput" >< span class = "identifier" > invoke</ span ></ code ></ a ></ li >
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< li >< a href = "../../support/deduce.html" title = "deduce" >< code class = "computeroutput" >< span class = "identifier" > deduce</ span ></ code ></ 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" >< small > Copyright © 2001-2007 Joel de Guzman, Dan Marsden, Tobias
Schwinger</ small ></ td >
2007-02-15 23:11:24 +00:00
</ tr ></ table >
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