class="special">)</span><span class="special">;</span>
  <a class="link" href="constant_iterator.html#idm9934-bb"><span class="identifier">constant_iterator</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="constant_iterator.html" title="Class template constant_iterator">constant_iterator</a><span class="special">&lt;</span> <span class="identifier">T</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span 