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< html >
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< title > deduce< / title >
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< div class = "section" lang = "en" >
< div class = "titlepage" > < div > < div > < h3 class = "title" >
< a name = "fusion.support.deduce" > < / a > < a href = "deduce.html" title = "deduce" > deduce< / a > < / h3 > < / div > < / div > < / div >
< a name = "fusion.support.deduce.description" > < / a > < h4 >
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< a name = "id464334" > < / a >
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< a href = "deduce.html#fusion.support.deduce.description" > Description< / a >
< / h4 >
< p >
Metafunction to apply < a href = "../notes.html#fusion.notes.element_conversion" > < span class = "emphasis" > < em > element
conversion< / em > < / span > < / a > to the full argument type.
< / p >
< p >
It removes references to < tt class = "computeroutput" > < span class = "keyword" > const< / span > < / tt > ,
references to array types are kept, even if the array is < tt class = "computeroutput" > < span class = "keyword" > const< / span > < / tt > .
Reference wrappers are removed (see < a href = "../notes.html#fusion.notes.boost__ref" > < tt class = "computeroutput" > < span class = "identifier" > boost< / span > < span class = "special" > ::< / span > < span class = "identifier" > ref< / span > < / tt > < / a > ).
< / p >
< a name = "fusion.support.deduce.header" > < / a > < h4 >
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< a name = "id464433" > < / a >
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< a href = "deduce.html#fusion.support.deduce.header" > Header< / a >
< / h4 >
< 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" > support< / span > < span class = "special" > /< / span > < span class = "identifier" > deduce< / span > < span class = "special" > .< / span > < span class = "identifier" > hpp< / span > < span class = "special" > > < / span >
< 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" > include< / span > < span class = "special" > /< / span > < span class = "identifier" > deduce< / span > < span class = "special" > .< / span > < span class = "identifier" > hpp< / span > < span class = "special" > > < / span >
< / pre >
< a name = "fusion.support.deduce.synopsis" > < / a > < h4 >
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< a name = "id464590" > < / a >
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< a href = "deduce.html#fusion.support.deduce.synopsis" > Synopsis< / a >
< / h4 >
< pre class = "programlisting" >
< span class = "keyword" > namespace< / span > < span class = "identifier" > traits< / span >
< span class = "special" > {< / span >
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< span class = "keyword" > template< / span > < span class = "special" > < < / span > < span class = "keyword" > typename< / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span >
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< span class = "keyword" > struct< / span > < span class = "identifier" > deduce< / 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 >
< span class = "special" > }< / span >
< / pre >
< a name = "fusion.support.deduce.example" > < / a > < h4 >
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< a name = "id464721" > < / a >
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< a href = "deduce.html#fusion.support.deduce.example" > Example< / a >
< / h4 >
< pre class = "programlisting" >
< 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 = "keyword" > struct< / span > < span class = "identifier" > holder< / 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" > < < / span > < span class = "identifier" > T< / span > < span class = "keyword" > const< / span > < span class = "special" > & > ::< / span > < span class = "identifier" > type< / span > < span class = "identifier" > element< / span > < span class = "special" > ;< / span >
< span class = "identifier" > holder< / span > < span class = "special" > (< / span > < span class = "identifier" > T< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > a< / span > < span class = "special" > )< / span >
< span class = "special" > :< / span > < span class = "identifier" > element< / 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 >
< 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" > holder< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > < / span > < span class = "identifier" > make_holder< / span > < span class = "special" > (< / span > < span class = "identifier" > T< / span > < span class = "keyword" > const< / span > < span class = "special" > & < / span > < span class = "identifier" > a< / span > < span class = "special" > )< / span >
< span class = "special" > {< / span >
< span class = "keyword" > return< / span > < span class = "identifier" > holder< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > (< / span > < span class = "identifier" > a< / span > < span class = "special" > );< / span >
< span class = "special" > }< / span >
< / pre >
< a name = "fusion.support.deduce.see_also" > < / a > < h4 >
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< a name = "id465086" > < / a >
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< a href = "deduce.html#fusion.support.deduce.see_also" > See also< / a >
< / h4 >
< div class = "itemizedlist" > < ul type = "disc" > < li > < a href = "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 >
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< td align = "right" > < div class = "copyright-footer" > < small > Copyright <20> 2001-2007 Joel de Guzman, Dan Marsden, Tobias
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 > )
< / p > < / small > < / div > < / td >
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