pan>
        <span class="identifier">assert</span><span class="special">(</span> <span class="identifier">iter</span><span class="special">-&gt;</span><span class="identifier">first</span>  <span class="special">==</span> <span class="identifier">key</span>  <span class="special">);</span>
        <span class="identifier">assert</span><span class="special">(</span> <span class="identifier">iter</span><span class="special">-&gt;</span><span class="identifier">second</span> <span class="special">==</span> <s