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<h1><a href="../Table_of_Contents.html"><img src="../mpl_logo.jpg" alt="[Home]" border=0 align="right"></a>find</h1><h3>Synopsis</h3>
<p>
<pre>
template<
typename Sequence
, typename T
>
struct find
{
typedef <em>unspecified</em> type;
};
</pre>
<p>
<h3>Description</h3>
<p>
Finds the first occurrence of type <code>T</code> in a <code>Sequence</code>.
<p>
<h3>Definition</h3>
<p>
<pre>
#include "<a href="../../../../../boost/mpl/find.hpp">boost/mpl/find.hpp</a>"
</pre>
<p>
<h3>Parameters</h3>
<table border="1">
<tr><th> Parameter </th><th> Requirement </th><th> Description </th></tr>
<tr><td><code>Sequence</code></td><td>A model of <a href="../Forward_Sequence.html">Forward Sequence</a></td><td>A sequence to search in. </td></tr>
<tr><td><code>T</code></td><td>A type</td><td>The type to search for. </td></tr>
</table>
<p>
<h3>Expression semantics</h3>
<p>
<table border="1">
<tr><th> Expression </th><th> Expression type </th><th> Precondition </th><th> Semantics </th><th> Postcondition </th></tr>
<tr><td><code>typedef find<Sequence,T>::type i;</code></td><td>A model of <a href="../Forward_Iterator.html">Forward Iterator</a></td><td></td><td>Equivalent to <code>typedef <a href="../Reference/find_if.html">find_if</a><Sequence, is_same<_,T> >::type i</code>; </td></tr>
</table>
<p>
<h3>Complexity</h3>
<p>
Linear. At most <code>size<Sequence>::value</code> comparisons for identity.
<p>
<h3>Example</h3>
<p>
<pre>
typedef <a href="../Reference/vector.html">vector</a><char,int,unsigned,long,unsigned long> types;
typedef find<types,unsigned>::type iter;
BOOST_STATIC_ASSERT(iter::pos::value == 2);
</pre>
<p>
<h3>See also</h3>
<p>
<a href="../Algorithms.html">Algorithms</a>, <code><a href="../Reference/find_if.html">find_if</a></code>, <code><a href="../Reference/contains.html">contains</a></code>, <code><a href="../Reference/count.html">count</a></code>, <code><a href="../Reference/count_if.html">count_if</a></code>
<p><hr>
<a href="../Table_of_Contents.html">Table of Contents</a><br>Last edited September 15, 2002 7:24 pm</body></html>
