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<title>Class template any_base_hook</title>
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<a name="boost.intrusive.any_base_hook"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle">Class template any_base_hook</span></h2>
<p>boost::intrusive::any_base_hook</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: <<a class="link" href="../../intrusive/reference.html#header.boost.intrusive.any_hook_hpp" title="Header <boost/intrusive/any_hook.hpp>">boost/intrusive/any_hook.hpp</a>>
</span><span class="keyword">template</span><span class="special"><</span><span class="keyword">class</span><span class="special">...</span> Options<span class="special">></span>
<span class="keyword">class</span> <a class="link" href="any_base_hook.html" title="Class template any_base_hook">any_base_hook</a> <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">make_any_base_hook</span><span class="special">::</span><span class="identifier">type</span><span class="special"><</span> <span class="identifier">O1</span><span class="special">,</span> <span class="identifier">O2</span><span class="special">,</span> <span class="identifier">O3</span> <span class="special">></span> <span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
<span class="comment">// <a class="link" href="any_base_hook.html#boost.intrusive.any_base_hookconstruct-copy-destruct">construct/copy/destruct</a></span>
<a class="link" href="any_base_hook.html#idp38041984-bb"><span class="identifier">any_base_hook</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
<a class="link" href="any_base_hook.html#idp38045248-bb"><span class="identifier">any_base_hook</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="any_base_hook.html" title="Class template any_base_hook">any_base_hook</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<a class="link" href="any_base_hook.html" title="Class template any_base_hook">any_base_hook</a> <span class="special">&</span> <a class="link" href="any_base_hook.html#idp19632592-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="any_base_hook.html" title="Class template any_base_hook">any_base_hook</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<a class="link" href="any_base_hook.html#idp19637888-bb"><span class="special">~</span><span class="identifier">any_base_hook</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
<span class="comment">// <a class="link" href="any_base_hook.html#idp38035856-bb">public member functions</a></span>
<span class="keyword">bool</span> <a class="link" href="any_base_hook.html#idp38036304-bb"><span class="identifier">is_linked</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="idp260748368"></a><h2>Description</h2>
<p>Derive a class from this hook in order to store objects of that class in an intrusive container.</p>
<p>The hook admits the following options: <code class="computeroutput">tag<></code>, <code class="computeroutput">void_pointer<></code> and <code class="computeroutput">link_mode<></code>.</p>
<p><code class="computeroutput">tag<></code> defines a tag to identify the node. The same tag value can be used in different classes, but if a class is derived from more than one <code class="computeroutput"><a class="link" href="any_base_hook.html" title="Class template any_base_hook">any_base_hook</a></code>, then each <code class="computeroutput"><a class="link" href="any_base_hook.html" title="Class template any_base_hook">any_base_hook</a></code> needs its unique tag.</p>
<p><code class="computeroutput">link_mode<></code> will specify the linking mode of the hook (<code class="computeroutput">normal_link</code>, <code class="computeroutput">safe_link</code>).</p>
<p><code class="computeroutput">void_pointer<></code> is the pointer type that will be used internally in the hook and the container configured to use this hook. </p>
<div class="refsect2">
<a name="idp260758320"></a><h3>
<a name="boost.intrusive.any_base_hookconstruct-copy-destruct"></a><code class="computeroutput">any_base_hook</code>
public
construct/copy/destruct</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><a name="idp38041984-bb"></a><span class="identifier">any_base_hook</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: If <code class="computeroutput"><a class="link" href="link_mode.html" title="Struct template link_mode">link_mode</a></code> is or <code class="computeroutput">safe_link</code> initializes the node to an unlinked state.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a name="idp38045248-bb"></a><span class="identifier">any_base_hook</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="any_base_hook.html" title="Class template any_base_hook">any_base_hook</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: If <code class="computeroutput"><a class="link" href="link_mode.html" title="Struct template link_mode">link_mode</a></code> is or <code class="computeroutput">safe_link</code> initializes the node to an unlinked state. The argument is ignored.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Rationale</strong></span>: Providing a copy-constructor makes classes using the hook STL-compliant without forcing the user to do some additional work. <code class="computeroutput">swap</code> can be used to emulate move-semantics. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a class="link" href="any_base_hook.html" title="Class template any_base_hook">any_base_hook</a> <span class="special">&</span> <a name="idp19632592-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="any_base_hook.html" title="Class template any_base_hook">any_base_hook</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Empty function. The argument is ignored.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Rationale</strong></span>: Providing an assignment operator makes classes using the hook STL-compliant without forcing the user to do some additional work. <code class="computeroutput">swap</code> can be used to emulate move-semantics. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a name="idp19637888-bb"></a><span class="special">~</span><span class="identifier">any_base_hook</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: If <code class="computeroutput"><a class="link" href="link_mode.html" title="Struct template link_mode">link_mode</a></code> is <code class="computeroutput">normal_link</code>, the destructor does nothing (ie. no code is generated). If <code class="computeroutput"><a class="link" href="link_mode.html" title="Struct template link_mode">link_mode</a></code> is <code class="computeroutput">safe_link</code> and the object is stored in a container an assertion is raised.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p>
</li>
</ol></div>
</div>
<div class="refsect2">
<a name="idp260800288"></a><h3>
<a name="idp38035856-bb"></a><code class="computeroutput">any_base_hook</code> public member functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
<pre class="literallayout"><span class="keyword">bool</span> <a name="idp38036304-bb"></a><span class="identifier">is_linked</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Precondition</strong></span>: <code class="computeroutput"><a class="link" href="link_mode.html" title="Struct template link_mode">link_mode</a></code> must be <code class="computeroutput">safe_link</code>.</p>
<p><span class="bold"><strong>Returns</strong></span>: true, if the node belongs to a container, false otherwise. This function can be used to test whether <code class="computeroutput">container::iterator_to</code> will return a valid iterator.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant </p>
</li></ol></div>
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<td align="right"><div class="copyright-footer">Copyright © 2005 Olaf Krzikalla<br>Copyright © 2006-2013 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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