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<td class="header-group page-location"><a href="../refmanual.html" class="navigation-link">Front Page</a> / <a href="./algorithms.html" class="navigation-link">Algorithms</a> / <a href="./inserters.html" class="navigation-link">Inserters</a> / <a href="./inserter-class.html" class="navigation-link">inserter (class)</a></td>
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<div class="section" id="inserter-class">
<span id="id483"></span><h1><a class="toc-backref" href="./inserters.html#id1467">inserter (class)</a></h1>
<div class="section" id="id484">
<h3><a class="subsection-title" href="#synopsis" name="synopsis">Synopsis</a></h3>
<pre class="literal-block">
template&lt;
      typename State
    , typename Operation
    &gt;
struct <a href="./inserter-class.html" class="identifier">inserter</a>
{
    typedef State state;
    typedef Operation operation;
};
</pre>
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<div class="section" id="id485">
<h3><a class="subsection-title" href="#description" name="description">Description</a></h3>
<p>A general-purpose model of the <a class="reference internal" href="./inserter.html">Inserter</a> concept.</p>
</div>
<div class="section" id="id486">
<h3><a class="subsection-title" href="#header" name="header">Header</a></h3>
<pre class="literal-block">
#include &lt;<a href="../../../../boost/mpl/inserter.hpp" class="header">boost/mpl/inserter.hpp</a>&gt;
</pre>
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<div class="section" id="id487">
<h3><a class="subsection-title" href="#model-of" name="model-of">Model of</a></h3>
<p><a class="reference internal" href="./inserter.html">Inserter</a></p>
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<div class="section" id="id488">
<h3><a class="subsection-title" href="#parameters" name="parameters">Parameters</a></h3>
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<tr><th class="head">Parameter</th>
<th class="head">Requirement</th>
<th class="head">Description</th>
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<tbody valign="top">
<tr><td><tt class="literal"><span class="pre">State</span></tt></td>
<td>Any type</td>
<td>A initial state.</td>
</tr>
<tr><td><tt class="literal"><span class="pre">Operation</span></tt></td>
<td>Binary <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a></td>
<td>An output operation.</td>
</tr>
</tbody>
</table>
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<div class="section" id="id489">
<h3><a class="subsection-title" href="#expression-semantics" name="expression-semantics">Expression semantics</a></h3>
<p>The semantics of an expression are defined only
where they differ from, or are not defined in <a class="reference internal" href="./inserter.html">Inserter</a>.</p>
<p>For any binary <a class="reference internal" href="./lambda-expression.html">Lambda Expression</a> <tt class="literal"><span class="pre">op</span></tt> and arbitrary type <tt class="literal"><span class="pre">state</span></tt>:</p>
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<thead valign="bottom">
<tr><th class="head">Expression</th>
<th class="head">Semantics</th>
</tr>
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<tbody valign="top">
<tr><td><tt class="literal"><span class="pre"><a href="./inserter-class.html" class="identifier">inserter</a>&lt;op,state&gt;</span></tt></td>
<td>An <a class="reference internal" href="./inserter.html">Inserter</a>.</td>
</tr>
</tbody>
</table>
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<div class="section" id="id490">
<h3><a class="subsection-title" href="#complexity" name="complexity">Complexity</a></h3>
<p>Amortized constant time.</p>
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<div class="section" id="id491">
<h3><a class="subsection-title" href="#example" name="example">Example</a></h3>
<pre class="literal-block">
template&lt; typename N &gt; struct is_odd : <a href="./bool.html" class="identifier">bool_</a>&lt; ( N::value % 2 ) &gt; {};

typedef <a href="./copy.html" class="identifier">copy</a>&lt;
      <a href="./range-c.html" class="identifier">range_c</a>&lt;int,0,10&gt;
    , <a href="./inserter-class.html" class="identifier">inserter</a>&lt; // a filtering '<a href="./push-back.html" class="identifier">push_back</a>' <a href="./inserter-class.html" class="identifier">inserter</a>
          <a href="./vector.html" class="identifier">vector</a>&lt;&gt;
        , <a href="./if.html" class="identifier">if_</a>&lt; is_odd&lt;<a href="./placeholders.html" class="identifier">_2</a>&gt;, <a href="./push-back.html" class="identifier">push_back</a>&lt;<a href="./placeholders.html" class="identifier">_1</a>,<a href="./placeholders.html" class="identifier">_2</a>&gt;, <a href="./placeholders.html" class="identifier">_1</a> &gt;
        &gt;
    &gt;::type odds;

<a href="./assert.html" class="identifier">BOOST_MPL_ASSERT</a>(( <a href="./equal.html" class="identifier">equal</a>&lt; odds, <a href="./vector-c.html" class="identifier">vector_c</a>&lt;int,1,3,5,7,9&gt;, <a href="./equal-to.html" class="identifier">equal_to</a>&lt;_,_&gt; > ));
</pre>
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<div class="section" id="id492">
<h3><a class="subsection-title" href="#see-also" name="see-also">See also</a></h3>
<p><a class="reference internal" href="./algorithms.html">Algorithms</a>, <a class="reference internal" href="./inserter.html">Inserter</a>, <a class="reference internal" href="./reversible-algorithm.html">Reversible Algorithm</a>, <a class="reference internal" href="./front-inserter.html">front_inserter</a>, <a class="reference internal" href="./back-inserter.html">back_inserter</a></p>
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