e function unique(node) == true.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Nodes</strong></span>: If node is inserted in a tree, this function corrupts the tree. </p>
</li>
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<pre class="literallayout"><span class="keyword">static</span> <span class="keyword">void</span> <a name="idp56936160-bb"></a><span class="identifier">init_header</span><span class="spec