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<h2><span class="refentrytitle">Struct template derivation_value_traits</span></h2>
<p>boost::intrusive::derivation_value_traits</p>
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<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.derivation_value_traits_hpp" title="Header <boost/intrusive/derivation_value_traits.hpp>">boost/intrusive/derivation_value_traits.hpp</a>>
</span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> NodeTraits<span class="special">,</span> <span class="identifier">link_mode_type</span> LinkMode <span class="special">=</span> <span class="identifier">safe_link</span><span class="special">></span>
<span class="keyword">struct</span> <a class="link" href="derivation_value_traits.html" title="Struct template derivation_value_traits">derivation_value_traits</a> <span class="special">{</span>
<span class="comment">// types</span>
<span class="keyword">typedef</span> <span class="identifier">NodeTraits</span> <a name="boost.intrusive.derivation_value_traits.node_traits"></a><span class="identifier">node_traits</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">T</span> <a name="boost.intrusive.derivation_value_traits.value_type"></a><span class="identifier">value_type</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">node_traits</span><span class="special">::</span><span class="identifier">node</span> <a name="boost.intrusive.derivation_value_traits.node"></a><span class="identifier">node</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">node_traits</span><span class="special">::</span><span class="identifier">node_ptr</span> <a name="boost.intrusive.derivation_value_traits.node_ptr"></a><span class="identifier">node_ptr</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">node_traits</span><span class="special">::</span><span class="identifier">const_node_ptr</span> <a name="boost.intrusive.derivation_value_traits.const_node_ptr"></a><span class="identifier">const_node_ptr</span><span class="special">;</span>
<span class="keyword">typedef</span> <a class="link" href="pointer_traits.html" title="Struct template pointer_traits">pointer_traits</a><span class="special"><</span> <span class="identifier">node_ptr</span> <span class="special">></span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">rebind_pointer</span><span class="special"><</span> <span class="identifier">value_type</span> <span class="special">></span><span class="special">::</span><span class="identifier">type</span> <a name="boost.intrusive.derivation_value_traits.pointer"></a><span class="identifier">pointer</span><span class="special">;</span>
<span class="keyword">typedef</span> <a class="link" href="pointer_traits.html" title="Struct template pointer_traits">pointer_traits</a><span class="special"><</span> <span class="identifier">node_ptr</span> <span class="special">></span><span class="special">::</span><span class="keyword">template</span> <span class="identifier">rebind_pointer</span><span class="special"><</span> <span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">></span><span class="special">::</span><span class="identifier">type</span> <a name="boost.intrusive.derivation_value_traits.const_pointer"></a><span class="identifier">const_pointer</span><span class="special">;</span>
<span class="keyword">typedef</span> <a class="link" href="pointer_traits.html" title="Struct template pointer_traits">boost::intrusive::pointer_traits</a><span class="special"><</span> <span class="identifier">pointer</span> <span class="special">></span><span class="special">::</span><span class="identifier">reference</span> <a name="boost.intrusive.derivation_value_traits.reference"></a><span class="identifier">reference</span><span class="special">;</span>
<span class="keyword">typedef</span> <a class="link" href="pointer_traits.html" title="Struct template pointer_traits">boost::intrusive::pointer_traits</a><span class="special"><</span> <span class="identifier">const_pointer</span> <span class="special">></span><span class="special">::</span><span class="identifier">reference</span> <a name="boost.intrusive.derivation_value_traits.const_reference"></a><span class="identifier">const_reference</span><span class="special">;</span>
<span class="comment">// <a class="link" href="derivation_value_traits.html#idm46322885669552-bb">public static functions</a></span>
<span class="keyword">static</span> <span class="identifier">node_ptr</span> <a class="link" href="derivation_value_traits.html#idm46322885668992-bb"><span class="identifier">to_node_ptr</span></a><span class="special">(</span><span class="identifier">reference</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">static</span> <span class="identifier">const_node_ptr</span> <a class="link" href="derivation_value_traits.html#idm46322885667184-bb"><span class="identifier">to_node_ptr</span></a><span class="special">(</span><span class="identifier">const_reference</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">static</span> <span class="identifier">pointer</span> <a class="link" href="derivation_value_traits.html#idm46322885665376-bb"><span class="identifier">to_value_ptr</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">node_ptr</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">static</span> <span class="identifier">const_pointer</span> <a class="link" href="derivation_value_traits.html#idm46322885663568-bb"><span class="identifier">to_value_ptr</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">const_node_ptr</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<span class="comment">// public data members</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">link_mode_type</span> <span class="identifier">link_mode</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="idm45555280578416"></a><h2>Description</h2>
<p>This value traits template is used to create value traits from user defined node traits where value_traits::value_type will derive from node_traits::node </p>
<div class="refsect2">
<a name="idm45555280577568"></a><h3>
<a name="idm46322885669552-bb"></a><code class="computeroutput">derivation_value_traits</code> public static functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem"><pre class="literallayout"><span class="keyword">static</span> <span class="identifier">node_ptr</span> <a name="idm46322885668992-bb"></a><span class="identifier">to_node_ptr</span><span class="special">(</span><span class="identifier">reference</span> value<span class="special">)</span><span class="special">;</span></pre></li>
<li class="listitem"><pre class="literallayout"><span class="keyword">static</span> <span class="identifier">const_node_ptr</span> <a name="idm46322885667184-bb"></a><span class="identifier">to_node_ptr</span><span class="special">(</span><span class="identifier">const_reference</span> value<span class="special">)</span><span class="special">;</span></pre></li>
<li class="listitem"><pre class="literallayout"><span class="keyword">static</span> <span class="identifier">pointer</span> <a name="idm46322885665376-bb"></a><span class="identifier">to_value_ptr</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">node_ptr</span> <span class="special">&</span> n<span class="special">)</span><span class="special">;</span></pre></li>
<li class="listitem"><pre class="literallayout"><span class="keyword">static</span> <span class="identifier">const_pointer</span> <a name="idm46322885663568-bb"></a><span class="identifier">to_value_ptr</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">const_node_ptr</span> <span class="special">&</span> n<span class="special">)</span><span class="special">;</span></pre></li>
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