ss="keyword">void</span> <a class="link" href="iunordered_set_index.html#idp55198160-bb"><span class="identifier">shrink_to_fit</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="iunordered_set_index.html#idp55199456-bb"><span class="identifier">find</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">intrusive_compare_key_type</span> <span class=