>std</span><span class="special">::</span><span class="identifier">binary_function</span></code>
          (<a href="https://svn.boost.org/trac/boost/ticket/12353" target="_top">#12353</a>).
        </li></ul></div>
<h3>
<a name="hash.changes.h24"></a>
      <span class="phrase"><a name="hash.changes.boost_1_65_0"></a></span><a class="link" href="changes.html#hash.changes.boost_1_65_0">Boost
      1.65.0</a>
    </h3>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li cla