al">&gt;</span> 
  <span class="keyword">struct</span> <a class="link" href="first/result_This_Pa_idp89313296.html" title="Struct template result&lt;This(Pair &amp;)&gt;">result</a><span class="special">&lt;</span><span class="identifier">This</span><span class="special">(</span><span class="identifier">Pair</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">&gt;</span> <span class="special">{</span>
    <span class="comment">// types</span>
    <span class="keyword