pan><span class="special">();</span>
<span class="special">};</span>
</pre>
<p>
            <span class="bold"><strong>Notes</strong></span>
          </p>
<p>
            The underlying pool <code class="computeroutput"><span class="identifier">p</span></code>
            referenced by the static functions in <code class="computeroutput"><span class="identifier">singleton_pool</span></code>
            is actually declared in a way so that it is:
          </p>
<div class="itemizedlist"><ul class="itemized