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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta name="generator" content=
"HTML Tidy for Linux/x86 (vers 12 April 2005), see www.w3.org" />
<title>sample_update_policy Interface</title>
<meta http-equiv="Content-Type" content=
"text/html; charset=us-ascii" />
</head>
<body>
<div id="page">
<h1><tt>sample_update_policy</tt> Interface</h1>
<p>A sample list-update policy.</p>
<p>This class serves to show the interface a list update
functor needs to support.</p>
<p>Defined in: <a href=
"http://gcc.gnu.org/viewcvs/*checkout*/trunk/libstdc%2B%2B-v3/include/ext/pb_ds/detail/list_update_policy/sample_update_policy.hpp"><tt>sample_update_policy.hpp</tt></a></p>
<h2><a name="link1" id="link1">Public Methods</a></h2>
<h3><a name="link2" id="link2">Constructors, destructor, and
related.</a></h3>
<table class="c1" width="100%" border="1" summary="Methods">
<tr>
<td width="45%" align="left"><b>Method</b></td>
<td width="55%" align="left"><b>Description</b></td>
</tr>
<tr>
<td>
<pre>
sample_update_policy
()
</pre>
</td>
<td>
<p>Default constructor.</p>
<p>Must be default constructable.</p>
</td>
</tr>
<tr>
<td>
<pre>
sample_update_policy
(<b>const</b> sample_update_policy &other)
</pre>
</td>
<td>
<p>Copy constructor.</p>
<p>Must be copy constructable.</p>
</td>
</tr>
<tr>
<td>
<pre>
<b>inline</b> <b>void</b>
swap
(sample_update_policy &other)
</pre>
</td>
<td>
<p>Swaps content.</p>
<p>Must be swappable (if there is such a word).</p>
</td>
</tr>
</table>
<h2><a name="link3" id="link3">Protected Types and
Constants</a></h2>
<h3><a name="link4" id="link4">Metadata definitions.</a></h3>
<table class="c1" width="100%" border="1" summary="Types">
<tr>
<td width="30%" align="left"><b>Type</b></td>
<td width="55%" align="left"><b>Definition</b></td>
<td width="15%" align="left"><b>Description</b></td>
</tr>
<tr>
<td>
<pre>
<a name="metadata_type2849297114" id=
"metadata_type2849297114">metadata_type</a>
</pre>
</td>
<td>
<pre>
Some metadata type.
</pre>
</td>
<td>
<p>Metadata on which this functor operates.</p>
<p>The <tt><b>class</b></tt> must declare the metadata
type on which it operates; the list-update based
containers will append to each node an object of this
type.</p>
</td>
</tr>
</table>
<h2><a name="link5" id="link5">Protected Methods</a></h2>
<h3><a name="link6" id="link6">Metadata operations.</a></h3>
<table class="c1" width="100%" border="1" summary="Methods">
<tr>
<td width="45%" align="left"><b>Method</b></td>
<td width="55%" align="left"><b>Description</b></td>
</tr>
<tr>
<td>
<pre>
<a href="#metadata_type2849297114"><tt>metadata_type</tt></a>
<b>operator</b>()
() <b>const</b>
</pre>
</td>
<td>
<p>Creates a metadata object.</p>
<p>A list-update based container object will call this
method to create a metadata type when a node is
created.</p>
</td>
</tr>
<tr>
<td>
<pre>
<b>bool</b>
<b>operator</b>()
(metadata_reference r_data) <b>const</b>
</pre>
</td>
<td>
<p>Decides whether a metadata object should be moved to
the front of the list. A list-update based containers
object will call this method to decide whether to move a
node to the front of the list. The method should return
<tt><b>true</b></tt> if the node should be moved to the
front of the list.</p>
<p><tt>metadata_reference</tt> is a reference to a
<a href=
"#metadata_type2849297114"><tt>metadata_type</tt></a>.</p>
</td>
</tr>
</table>
</div>
</body>
</html>
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