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+<h2><span class="refentrytitle">Struct template cache_begin</span></h2>
+<p>boost::intrusive::cache_begin</p>
+</div>
+<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
+<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../intrusive/reference.html#header.boost.intrusive.options_hpp" title="Header &lt;boost/intrusive/options.hpp&gt;">boost/intrusive/options.hpp</a>&gt;
+
+</span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">bool</span> Enabled<span class="special">&gt;</span>
+<span class="keyword">struct</span> <a class="link" href="cache_begin.html" title="Struct template cache_begin">cache_begin</a> <span class="special">{</span>
+<span class="special">}</span><span class="special">;</span></pre></div>
+<div class="refsect1">
+<a name="id2081621"></a><h2>Description</h2>
+<p>This option setter specifies if the container will cache a pointer to the first non-empty bucket so that begin() is always constant-time. This is specially helpful when we can have containers with a few elements but with big bucket arrays (that is, hashtables with low load factors). </p>
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+<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
+<td align="left"></td>
+<td align="right"><div class="copyright-footer">Copyright &#169; 2005 Olaf Krzikalla<br>Copyright &#169; 2006-2011 Ion Gaztanaga<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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