ss="special">::</span><span class="identifier">is_convertible</span><span class="special">&lt;</span> <span class="identifier">OtherIterator</span><span class="special">,</span> <span class="identifier">Iterator</span> <span class="special">&gt;::</span><span class="identifier">value</span><span class="special">,</span> <span class="keyword">int</span> <span class="special">&gt;&gt;</span>
<span class="identifier">ever_circling_iterator</span><span class="special">(</span><span class="identifier">ever_circl