     <dt id="a1bb3d5fa6dbb670064d3f6c5fa5e1255">
              using <a href="#a1bb3d5fa6dbb670064d3f6c5fa5e1255" class="m-doc-self">key_equal</a> = KeyEqual
            </dt>
            <dd>Equality functor alias.</dd>
            <dt id="ac82139db1ae78703a50132f247cb7824">
              using <a href="#ac82139db1ae78703a50132f247cb7824" class="m-doc-self">reference</a> = <a href="#a50288a48539e16c7e6a695c59cdd9083" class="m-doc">value_<wbr />type</a>&amp;
            </dt>
            <dd>Reference alias