span><span class="keyword">typename</span> This<span class="special">,</span> <span class="keyword">typename</span> Sub<span class="special">&gt;</span> 
  <span class="keyword">struct</span> <a class="link" href="str/resu_1_3_47_5_3_2_1_2_15_3.html" title="Struct template result&lt;This(Sub)&gt;">result</a><span class="special">&lt;</span><span class="identifier">This</span><span class="special">(</span><span class="identifier">Sub</span><span class="special">)</span><span class="special">&gt;</span> <span