al">)</span><span class="special">;</span>

  <span class="comment">// <a class="link" href="any.html#id-1_3_5_5_2_1_2_13-bb">queries</a></span>
  <span class="keyword">bool</span> <a class="link" href="any.html#id-1_3_5_5_2_1_2_13_1-bb"><span class="identifier">empty</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">const</span> std::type_info <span class="special">&amp;</span> <a class="link" href