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< a name = "fusion.sequences.intrinsics.metafunctions.at_c" > < / a > < a href = "at_c.html" title = "at_c" > at_c< / a > < / h5 > < / div > < / div > < / div >
< a name = "fusion.sequences.intrinsics.metafunctions.at_c.description" > < / a > < h6 >
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< a name = "id1033686" > < / a >
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< a href = "at_c.html#fusion.sequences.intrinsics.metafunctions.at_c.description" > Description< / a >
< / h6 >
< p >
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Returns the result type of < a href = "../functions/at_c.html" title = "at_c" > < code class = "computeroutput" > < span class = "identifier" > at_c< / span > < / code > < / a >
< sup > [< a name = "id1033718" href = "#ftn.id1033718" > 7< / a > ]< / sup >
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.
< / p >
< a name = "fusion.sequences.intrinsics.metafunctions.at_c.synopsis" > < / a > < h6 >
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< a name = "id1033821" > < / a >
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< a href = "at_c.html#fusion.sequences.intrinsics.metafunctions.at_c.synopsis" > Synopsis< / a >
< / h6 >
< pre class = "programlisting" >
< span class = "keyword" > template< / span > < span class = "special" > < < / span >
< span class = "keyword" > typename< / span > < span class = "identifier" > Seq< / span > < span class = "special" > ,< / span >
< span class = "keyword" > int< / span > < span class = "identifier" > M< / span > < span class = "special" > > < / span >
< span class = "keyword" > struct< / span > < span class = "identifier" > at_c< / 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 >
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< a name = "id1033924" > < / a > < p class = "title" > < b > Table<EFBFBD> 1.26.<2E> Parameters< / b > < / p >
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< table class = "table" summary = "Parameters" >
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< colgroup >
< col >
< col >
< col >
< / colgroup >
< thead > < tr >
< th > Parameter< / th >
< th > Requirement< / th >
< th > Description< / th >
< / tr > < / thead >
< tbody >
< tr >
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< td > < code class = "computeroutput" > < span class = "identifier" > Seq< / span > < / code > < / td >
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< td > A
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model of < a href = "../../concepts/forward_sequence.html" title = "Forward
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Sequence">Forward
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Sequence< / a >
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< / td >
< td > Argument sequence< / td >
< / tr >
< tr >
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< td > < code class = "computeroutput" > < span class = "identifier" > M< / span > < / code > < / td >
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< td > Positive
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integer index< / td >
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< td > Index of element< / td >
< / tr >
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< a name = "fusion.sequences.intrinsics.metafunctions.at_c.expression_semantics" > < / a > < h6 >
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< a name = "id1034009" > < / a >
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< a href = "at_c.html#fusion.sequences.intrinsics.metafunctions.at_c.expression_semantics" > Expression
Semantics< / a >
< / h6 >
< pre class = "programlisting" >
< span class = "identifier" > result_of< / span > < span class = "special" > ::< / span > < span class = "identifier" > at_c< / span > < span class = "special" > < < / span > < span class = "identifier" > Seq< / span > < span class = "special" > ,< / span > < span class = "identifier" > M< / span > < span class = "special" > > ::< / span > < span class = "identifier" > type< / span >
< / pre >
< p >
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< span class = "bold" > < strong > Return type< / strong > < / span > : Any type
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< / p >
< p >
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< span class = "bold" > < strong > Semantics< / strong > < / span > : Returns the result type of
using < a href = "../functions/at_c.html" title = "at_c" > < code class = "computeroutput" > < span class = "identifier" > at_c< / span > < / code > < / a > to access the < code class = "computeroutput" > < span class = "identifier" > M< / span > < / code > th element of < code class = "computeroutput" > < span class = "identifier" > Seq< / span > < / code > .
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< / p >
< a name = "fusion.sequences.intrinsics.metafunctions.at_c.header" > < / a > < h6 >
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< a name = "id1034131" > < / a >
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< a href = "at_c.html#fusion.sequences.intrinsics.metafunctions.at_c.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" > sequence< / span > < span class = "special" > /< / span > < span class = "identifier" > intrinsic< / span > < span class = "special" > /< / span > < span class = "identifier" > at< / span > < span class = "special" > .< / span > < span class = "identifier" > hpp< / span > < span class = "special" > > < / span >
< / pre >
< a name = "fusion.sequences.intrinsics.metafunctions.at_c.example" > < / a > < h6 >
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< a name = "id1034224" > < / a >
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< a href = "at_c.html#fusion.sequences.intrinsics.metafunctions.at_c.example" > Example< / a >
< / h6 >
< pre class = "programlisting" >
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< span class = "keyword" > typedef< / span > < a href = "../../containers/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" > float< / span > < span class = "special" > ,< / span > < span class = "keyword" > char< / span > < span class = "special" > > < / span > < span class = "identifier" > vec< / span > < span class = "special" > ;< / span >
< span class = "identifier" > BOOST_MPL_ASSERT< / span > < span class = "special" > ((< / span > < span class = "identifier" > boost< / span > < span class = "special" > ::< / span > < span class = "identifier" > is_same< / span > < span class = "special" > < < / span > < a href = "at_c.html" title = "at_c" > < code class = "computeroutput" > < span class = "identifier" > result_of< / span > < span class = "special" > ::< / span > < span class = "identifier" > at_c< / span > < / code > < / a > < span class = "special" > < < / span > < span class = "identifier" > vec< / span > < span class = "special" > ,< / span > < span class = "number" > 1< / span > < span class = "special" > > ::< / span > < span class = "identifier" > type< / span > < span class = "special" > ,< / span > < span class = "keyword" > float< / span > < span class = "special" > & > ));< / span >
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< / pre >
< div class = "footnotes" >
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< div class = "footnote" > < p > < sup > [< a name = "ftn.id1033718" href = "#id1033718" > 7< / a > ] < / sup >
< a href = "at_c.html" title = "at_c" > < code class = "computeroutput" > < span class = "identifier" > result_of< / span > < span class = "special" > ::< / span > < span class = "identifier" > at_c< / span > < / code > < / a > reflects the actual
return type of the function < a href = "../functions/at_c.html" title = "at_c" > < code class = "computeroutput" > < span class = "identifier" > at_c< / span > < / code > < / a > . < span class = "underline" > _sequence< / span > _s
typically return references to its elements via the < a href = "../functions/at_c.html" title = "at_c" > < code class = "computeroutput" > < span class = "identifier" > at_c< / span > < / code > < / a > function. If you want
to get the actual element type, use < a href = "value_at_c.html" title = "value_at_c" > < code class = "computeroutput" > < span class = "identifier" > result_of< / span > < span class = "special" > ::< / span > < span class = "identifier" > value_at_c< / span > < / code > < / a >
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< td align = "right" > < small > Copyright <20> 2001-2005 Joel de Guzman, Dan Marsden< / small > < / td >
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