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<title>null_tree_node_update Interface</title>
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<h1><tt>null_tree_node_update</tt> Interface</h1>
<p>A "null" node updater, indicating that no node updates are
required.</p>
<p><a href=
"concepts.html#concepts_null_policies">Interface::Concepts::Null
Policy Classes</a> explains the concept of a null policy.</p>
<p>Defined in: <a href=
"../../../../include/ext/pb_ds/tree_policy.hpp"><tt>tree_policy.hpp</tt></a></p>
<h2><a name="link1" id="link1">Template Parameters</a></h2>
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"Template Parameters">
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<td width="20%" align="left"><b>Parameter</b></td>
<td width="50%" align="left"><b>Description</b></td>
<td width="30%" align="left"><b>Default Value</b></td>
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<td>
<pre>
<a name="Const_Node_Iterator1933878761" id=
"Const_Node_Iterator1933878761"><b>class</b> Const_Node_Iterator</a>
</pre>
</td>
<td>
<p>Const node iterator type.</p>
</td>
<td>-</td>
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<td>
<pre>
<a name="Node_Iterator4206909839" id=
"Node_Iterator4206909839"><b>class</b> Node_Iterator</a>
</pre>
</td>
<td>
<p>Node iterator type.</p>
</td>
<td>-</td>
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<td>
<pre>
<a name="Cmp_Fn294335" id="Cmp_Fn294335"><b>class</b> Cmp_Fn</a>
</pre>
</td>
<td>
<p>Comparison functor.</p>
</td>
<td>-</td>
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<td>
<pre>
<a name="Allocator35940069" id=
"Allocator35940069"><b>class</b> Allocator</a>
</pre>
</td>
<td>
<p>Allocator type.</p>
</td>
<td>-</td>
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