have been deallocated.</p>
<p><span class="bold"><strong>Effects</strong></span>: A derived class shall implement this function to dispose of allocated storage.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">virtual</span> <span class="keyword">bool</span> <a name="idp39185584-bb"></a><span class="identifier">do_is_equal</span><span class="special">(</span><span class="keyword">const</span> <a class="link" 