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7 <title>The MPL Reference Manual: count
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14 <div class=
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15 <h1><a class=
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"./querying-algorithms.html#id1478">count
</a></h1>
16 <div class=
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17 <h3><a class=
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18 <pre class=
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23 struct
<a href=
"./count.html" class=
"identifier">count
</a>
25 typedef
<em>unspecified
</em> type;
29 <div class=
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30 <h3><a class=
"subsection-title" href=
"#description" name=
"description">Description
</a></h3>
31 <p>Returns the number of elements in a
<tt class=
"literal"><span class=
"pre">Sequence
</span></tt> that are identical to
<tt class=
"literal"><span class=
"pre">T
</span></tt>.
</p>
33 <div class=
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34 <h3><a class=
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</a></h3>
35 <pre class=
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36 #include
<<a href=
"../../../../boost/mpl/count.hpp" class=
"header">boost/mpl/count.hpp
</a>>
39 <div class=
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40 <h3><a class=
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47 <thead valign=
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48 <tr><th class=
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49 <th class=
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50 <th class=
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</th>
54 <tr><td><tt class=
"literal"><span class=
"pre">Sequence
</span></tt></td>
55 <td><a class=
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"./forward-sequence.html">Forward Sequence
</a></td>
56 <td>A sequence to be examined.
</td>
58 <tr><td><tt class=
"literal"><span class=
"pre">T
</span></tt></td>
60 <td>A type to search for.
</td>
65 <div class=
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66 <h3><a class=
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67 <p>For any
<a class=
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"./forward-sequence.html">Forward Sequence
</a> <tt class=
"literal"><span class=
"pre">s
</span></tt> and arbitrary type
<tt class=
"literal"><span class=
"pre">t
</span></tt>:
</p>
68 <pre class=
"literal-block">
69 typedef
<a href=
"./count.html" class=
"identifier">count
</a><s,t
>::type n;
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75 <tr class=
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</th><td class=
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"reference internal" href=
"./integral-constant.html">Integral Constant
</a>.
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78 <tr class=
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</th><td class=
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"first">Equivalent to
</p>
79 <pre class=
"last literal-block">
80 typedef
<a href=
"./count-if.html" class=
"identifier">count_if
</a>< s,is_same
<_,T
> >::type n;
87 <div class=
"section" id=
"id564">
88 <h3><a class=
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"#complexity" name=
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</a></h3>
89 <p>Linear. Exactly
<tt class=
"literal"><span class=
"pre"><a href=
"./size.html" class=
"identifier">size
</a><s
>::value
</span></tt> comparisons for identity.
</p>
91 <div class=
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92 <h3><a class=
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93 <pre class=
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94 typedef
<a href=
"./vector.html" class=
"identifier">vector
</a><int,char,long,short,char,short,double,long
> types;
95 typedef
<a href=
"./count.html" class=
"identifier">count
</a><types, short
>::type n;
97 <a href=
"./assert-relation.html" class=
"identifier">BOOST_MPL_ASSERT_RELATION
</a>( n::value, ==,
2 );
100 <div class=
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101 <h3><a class=
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</a></h3>
102 <p><a class=
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"./querying-algorithms.html">Querying Algorithms
</a>,
<a class=
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"./count-if.html">count_if
</a>,
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"./find.html">find
</a>,
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"./lower-bound.html">lower_bound
</a></p>
103 <!-- Algorithms/Querying Algorithms//count_if |50 -->
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109 <td><div class=
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2001-
2009 Aleksey Gurtovoy and David Abrahams
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110 Distributed under the Boost Software License, Version
1.0. (See accompanying
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