s="identifier">Disposer</span> disposer<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Requires</strong></span>: "disposer" must be an object function taking a node_ptr parameter and shouldn't throw.</p>
<p><span class="bold"><strong>Effects</strong></span>: Empties the target tree calling <code class="computeroutput">void disposer::operator()(const node_ptr &amp;)</code> for every node of the tree except the header.</p>
<p><span class="bold"><strong>Complexi