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< a accesskey = "p" href = "prior.html" > < img src = "../../../../../../../doc/src/images/prev.png" alt = "Prev" > < / a > < a accesskey = "u" href = "../metafunctions.html" > < img src = "../../../../../../../doc/src/images/up.png" alt = "Up" > < / a > < a accesskey = "h" href = "../../../index.html" > < img src = "../../../../../../../doc/src/images/home.png" alt = "Home" > < / a > < a accesskey = "n" href = "distance.html" > < img src = "../../../../../../../doc/src/images/next.png" alt = "Next" > < / a >
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< div class = "section" >
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< div class = "titlepage" > < div > < div > < h4 class = "title" >
< a name = "fusion.iterator.metafunctions.equal_to" > < / a > < a class = "link" href = "equal_to.html" title = "equal_to" > equal_to< / a >
< / h4 > < / div > < / div > < / div >
< a name = "fusion.iterator.metafunctions.equal_to.description" > < / a > < h6 >
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< a name = "id824032" > < / a >
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< a class = "link" href = "equal_to.html#fusion.iterator.metafunctions.equal_to.description" > Description< / a >
< / h6 >
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< p >
Returns a true-valued < a href = "http://www.boost.org/libs/mpl/doc/refmanual/integral-constant.html" target = "_top" > MPL
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Integral Constant< / a > if < code class = "computeroutput" > < span class = "identifier" > I< / span > < / code >
and < code class = "computeroutput" > < span class = "identifier" > J< / span > < / code > are equal.
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< / p >
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< a name = "fusion.iterator.metafunctions.equal_to.synopsis" > < / a > < h6 >
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< a name = "id824068" > < / a >
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< a class = "link" href = "equal_to.html#fusion.iterator.metafunctions.equal_to.synopsis" > Synopsis< / a >
< / h6 >
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< pre class = "programlisting" > < span class = "keyword" > template< / span > < span class = "special" > < < / span >
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< span class = "keyword" > typename< / span > < span class = "identifier" > I< / span > < span class = "special" > ,< / span >
< span class = "keyword" > typename< / span > < span class = "identifier" > J< / span >
< span class = "special" > > < / span >
< span class = "keyword" > struct< / span > < span class = "identifier" > equal_to< / 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" >
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< a name = "id824153" > < / a > < p class = "title" > < b > Table  1.16.  Parameters< / b > < / p >
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< div class = "table-contents" > < table class = "table" summary = "Parameters" >
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< colgroup >
< col >
< col >
< col >
< / colgroup >
< thead > < tr >
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< th >
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< p >
Parameter
< / p >
< / th >
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< th >
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< p >
Requirement
< / p >
< / th >
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< th >
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< p >
Description
< / p >
< / th >
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< / tr > < / thead >
< tbody > < tr >
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< td >
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< p >
< code class = "computeroutput" > < span class = "identifier" > I< / span > < / code > , < code class = "computeroutput" > < span class = "identifier" > J< / span > < / code >
< / p >
< / td >
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< td >
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< p >
Any fusion iterators
< / p >
< / td >
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< td >
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< p >
Operation's arguments
< / p >
< / td >
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< / tr > < / tbody >
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< / table > < / div >
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< / div >
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< br class = "table-break" > < a name = "fusion.iterator.metafunctions.equal_to.expression_semantics" > < / a > < h6 >
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< a name = "id824247" > < / a >
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< a class = "link" href = "equal_to.html#fusion.iterator.metafunctions.equal_to.expression_semantics" > Expression
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Semantics< / a >
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< / h6 >
< pre class = "programlisting" > < a class = "link" href = "equal_to.html" title = "equal_to" > < code class = "computeroutput" > < span class = "identifier" > result_of< / span > < span class = "special" > ::< / span > < span class = "identifier" > equal_to< / span > < / code > < / a > < span class = "special" > < < / span > < span class = "identifier" > I< / span > < span class = "special" > ,< / span > < span class = "identifier" > J< / span > < span class = "special" > > ::< / span > < span class = "identifier" > type< / span >
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< / pre >
< p >
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< span class = "bold" > < strong > Return type< / strong > < / span > : A model of < a href = "http://www.boost.org/libs/mpl/doc/refmanual/integral-constant.html" target = "_top" > MPL
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Integral Constant< / a > .
< / p >
< p >
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< span class = "bold" > < strong > Semantics< / strong > < / span > : Returns < code 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 > < / code >
if < code class = "computeroutput" > < span class = "identifier" > I< / span > < / code > and < code class = "computeroutput" > < span class = "identifier" > J< / span > < / code > are iterators to the same position.
Returns < code 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 > < / code > otherwise.
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< / p >
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< a name = "fusion.iterator.metafunctions.equal_to.header" > < / a > < h6 >
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< a name = "id824385" > < / a >
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< a class = "link" href = "equal_to.html#fusion.iterator.metafunctions.equal_to.header" > Header< / a >
< / h6 >
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< 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" > iterator< / span > < span class = "special" > /< / span > < span class = "identifier" > equal_to< / span > < span class = "special" > .< / span > < span class = "identifier" > hpp< / span > < span class = "special" > > < / span >
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< 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" > equal_to< / span > < span class = "special" > .< / span > < span class = "identifier" > hpp< / span > < span class = "special" > > < / span >
< / pre >
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< a name = "fusion.iterator.metafunctions.equal_to.example" > < / a > < h6 >
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< a name = "id824493" > < / a >
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< a class = "link" href = "equal_to.html#fusion.iterator.metafunctions.equal_to.example" > Example< / a >
< / h6 >
< pre class = "programlisting" > < span class = "keyword" > typedef< / span > < a class = "link" href = "../../container/vector.html" title = "vector" > < code class = "computeroutput" > < span class = "identifier" > vector< / span > < / code > < / a > < span class = "special" > < < / span > < span class = "keyword" > int< / span > < span class = "special" > ,< / span > < span class = "keyword" > double< / span > < span class = "special" > > < / span > < span class = "identifier" > vec< / span > < span class = "special" > ;< / span >
< span class = "keyword" > typedef< / span > < a class = "link" href = "../../sequence/intrinsic/metafunctions/begin.html" title = "begin" > < code class = "computeroutput" > < span class = "identifier" > result_of< / span > < span class = "special" > ::< / span > < span class = "identifier" > begin< / span > < / code > < / a > < span class = "special" > < < / span > < span class = "identifier" > vec< / span > < span class = "special" > > ::< / span > < span class = "identifier" > type< / span > < span class = "identifier" > first< / span > < span class = "special" > ;< / span >
< span class = "keyword" > typedef< / span > < a class = "link" href = "../../sequence/intrinsic/metafunctions/end.html" title = "end" > < code class = "computeroutput" > < span class = "identifier" > result_of< / span > < span class = "special" > ::< / span > < span class = "identifier" > end< / span > < / code > < / a > < span class = "special" > < < / span > < span class = "identifier" > vec< / span > < span class = "special" > > ::< / span > < span class = "identifier" > type< / span > < span class = "identifier" > last< / span > < span class = "special" > ;< / span >
< span class = "identifier" > BOOST_MPL_ASSERT< / span > < span class = "special" > ((< / span > < a class = "link" href = "equal_to.html" title = "equal_to" > < code class = "computeroutput" > < span class = "identifier" > result_of< / span > < span class = "special" > ::< / span > < span class = "identifier" > equal_to< / span > < / code > < / a > < span class = "special" > < < / span > < span class = "identifier" > first< / span > < span class = "special" > ,< / span > < span class = "identifier" > first< / span > < span class = "special" > > ));< / span >
< span class = "identifier" > BOOST_MPL_ASSERT_NOT< / span > < span class = "special" > ((< / span > < a class = "link" href = "equal_to.html" title = "equal_to" > < code class = "computeroutput" > < span class = "identifier" > result_of< / span > < span class = "special" > ::< / span > < span class = "identifier" > equal_to< / span > < / code > < / a > < span class = "special" > < < / span > < span class = "identifier" > first< / span > < span class = "special" > ,< / span > < span class = "identifier" > last< / span > < span class = "special" > > ));< / span >
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< 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 > )
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