hook.html" title="Class template list_member_hook">list_member_hook</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="list_member_hook.html" title="Class template list_member_hook">list_member_hook</a> <span class="special">&amp;</span> <a class="link" href="list_member_hook.html#idp61008896-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><span class="keyword">const</span> <a cla