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< a name = "fusion.support.is_sequence" > < / a > < a href = "is_sequence.html" title = "is_sequence" > is_sequence< / a >
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< a name = "fusion.support.is_sequence.description" > < / a > < h4 >
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< a name = "id412310" > < / a >
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< a href = "is_sequence.html#fusion.support.is_sequence.description" > Description< / a >
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< p >
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Metafunction that evaluates to < tt class = "computeroutput" > < span class = "identifier" > mpl< / span > < span class = "special" > ::< / span > < span class = "identifier" > true_< / span > < / tt >
if a certain type < tt class = "computeroutput" > < span class = "identifier" > T< / span > < / tt > is a
conforming Fusion < a href = "../sequence.html" title = "Sequence" > Sequence< / a > , < tt class = "computeroutput" > < span class = "identifier" > mpl< / span > < span class = "special" > ::< / span > < span class = "identifier" > false_< / span > < / tt >
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otherwise. This may be specialized to accomodate clients which provide Fusion
conforming sequences.
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< a name = "fusion.support.is_sequence.synopsis" > < / a > < h4 >
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< a name = "id412390" > < / a >
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< a href = "is_sequence.html#fusion.support.is_sequence.synopsis" > Synopsis< / a >
< / h4 >
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< pre class = "programlisting" > < span class = "keyword" > namespace< / span > < span class = "identifier" > traits< / span >
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< 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 >
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< span class = "keyword" > struct< / span > < span class = "identifier" > is_sequence< / span >
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< 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 >
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< a name = "fusion.support.is_sequence.parameters" > < / a > < h4 >
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< a name = "id412506" > < / a >
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< a href = "is_sequence.html#fusion.support.is_sequence.parameters" > Parameters< / a >
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< th > < p >
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Parameter
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< / p > < / th >
< th > < p >
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Requirement
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< / p > < / th >
< th > < p >
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Description
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< / p > < / th >
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< / tr > < / thead >
< tbody > < tr >
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< td > < p >
< tt class = "computeroutput" > < span class = "identifier" > T< / span > < / tt >
< / p > < / td >
< td > < p >
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Any type
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< / p > < / td >
< td > < p >
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The type to query.
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< / p > < / td >
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< / tr > < / tbody >
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< a name = "fusion.support.is_sequence.expression_semantics" > < / a > < h4 >
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< a name = "id412606" > < / a >
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< a href = "is_sequence.html#fusion.support.is_sequence.expression_semantics" > Expression
Semantics< / a >
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< pre class = "programlisting" > < span class = "keyword" > typedef< / span > < span class = "identifier" > traits< / span > < span class = "special" > ::< / span > < span class = "identifier" > is_sequence< / span > < span class = "special" > < < / span > < span class = "identifier" > T< / span > < span class = "special" > > ::< / span > < span class = "identifier" > type< / span > < span class = "identifier" > c< / span > < span class = "special" > ;< / span >
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< / pre >
< p >
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< span class = "bold" > < b > Return type< / b > < / span > : An < a href = "http://www.boost.org/libs/mpl/doc/refmanual/integral-constant.html" target = "_top" > MPL
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Boolean Constant< / a > .
< / p >
< p >
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< span class = "bold" > < b > Semantics< / b > < / span > : Metafunction that evaluates to
< tt class = "computeroutput" > < span class = "identifier" > mpl< / span > < span class = "special" > ::< / span > < span class = "identifier" > true_< / span > < / tt > if a certain type < tt class = "computeroutput" > < span class = "identifier" > T< / span > < / tt >
is a conforming Fusion sequence, < tt class = "computeroutput" > < span class = "identifier" > mpl< / span > < span class = "special" > ::< / span > < span class = "identifier" > false_< / span > < / tt >
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otherwise.
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< a name = "fusion.support.is_sequence.header" > < / a > < h4 >
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< a name = "id412755" > < / a >
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< a href = "is_sequence.html#fusion.support.is_sequence.header" > Header< / a >
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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" > support< / span > < span class = "special" > /< / span > < span class = "identifier" > is_sequence< / 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" > is_sequence< / span > < span class = "special" > .< / span > < span class = "identifier" > hpp< / span > < span class = "special" > > < / span >
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< a name = "fusion.support.is_sequence.example" > < / a > < h4 >
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< a name = "id412893" > < / a >
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< a href = "is_sequence.html#fusion.support.is_sequence.example" > Example< / a >
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< pre class = "programlisting" > < span class = "identifier" > BOOST_MPL_ASSERT_NOT< / span > < span class = "special" > ((< / span > < span class = "identifier" > traits< / span > < span class = "special" > ::< / span > < span class = "identifier" > is_sequence< / span > < span class = "special" > < < / span > < span class = "identifier" > std< / span > < span class = "special" > ::< / span > < span class = "identifier" > vector< / span > < span class = "special" > < < / span > < span class = "keyword" > int< / span > < span class = "special" > > < / span > < span class = "special" > > < / span > < span class = "special" > ));< / span >
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< span class = "identifier" > BOOST_MPL_ASSERT_NOT< / span > < span class = "special" > ((< / span > < span class = "identifier" > is_sequence< / span > < span class = "special" > < < / span > < span class = "keyword" > int< / span > < span class = "special" > > < / span > < span class = "special" > ));< / span >
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< span class = "identifier" > BOOST_MPL_ASSERT< / span > < span class = "special" > ((< / span > < span class = "identifier" > traits< / span > < span class = "special" > ::< / span > < span class = "identifier" > is_sequence< / span > < span class = "special" > < < / span > < a href = "../container/list.html" title = "list" > < tt class = "computeroutput" > < span class = "identifier" > list< / span > < / tt > < / a > < span class = "special" > < > < / span > < span class = "special" > > < / span > < span class = "special" > ));< / span >
< span class = "identifier" > BOOST_MPL_ASSERT< / span > < span class = "special" > ((< / span > < span class = "identifier" > traits< / span > < span class = "special" > ::< / span > < span class = "identifier" > is_sequence< / span > < span class = "special" > < < / span > < a href = "../container/list.html" title = "list" > < tt class = "computeroutput" > < span class = "identifier" > list< / span > < / tt > < / a > < span class = "special" > < < / span > < span class = "keyword" > int< / span > < span class = "special" > > < / span > < span class = "special" > > < / span > < span class = "special" > ));< / span >
< span class = "identifier" > BOOST_MPL_ASSERT< / span > < span class = "special" > ((< / span > < span class = "identifier" > traits< / span > < span class = "special" > ::< / span > < span class = "identifier" > is_sequence< / 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 = "special" > > < / span > < span class = "special" > ));< / span >
< span class = "identifier" > BOOST_MPL_ASSERT< / span > < span class = "special" > ((< / span > < span class = "identifier" > traits< / span > < span class = "special" > ::< / span > < span class = "identifier" > is_sequence< / 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 = "special" > > < / span > < span class = "special" > ));< / span >
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< td align = "right" > < div class = "copyright-footer" > Copyright <20> 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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