span class="special">,</span> <span class="identifier">result</span><span class="special">);</span>

<span class="keyword">if</span> <span class="special">(</span><span class="identifier">r</span> <span class="special">&amp;&amp;</span> <span class="identifier">iter</span> <span class="special">==</span> <span class="identifier">end</span><span class="special">)</span>
<span class="special">{</span>
    <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <s