>m_end</span></code> from <code class="computeroutput"><span class="identifier">end</span></code>.
      </p>
<pre class="programlisting"><span class="identifier">filter_iterator</span><span class="special">(</span><span class="identifier">Iterator</span> <span class="identifier">x</span><span class="special">,</span> <span class="identifier">Iterator</span> <span class="identifier">end</span> <span class="special">=</span> <span class="identifier">Iterator</span><span class="special">());</span>
</pre>
<p>