="identifier">MyClass</span> <span class="special">&amp;</span><span class="identifier">l</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">MyClass</span> <span class="special">&amp;</span><span class="identifier">r</span><span class="special">)</span>
   <span class="special">{</span>  <span class="keyword">return</span> <span class="identifier">l</span><span class="special">.</span><span class="identifier">value_</span> <span class="special">==</span> <span c