ass="special">=</span> <span class="identifier">T</span><span class="special">&gt;</span> 
<span class="keyword">struct</span> <a class="link" href="addable.html" title="Struct template addable">addable</a> <span class="special">{</span>

  <span class="comment">// <a class="link" href="addable.html#id-1_3_41_13_24_1_1_6_2-bb">public static functions</a></span>
  <span class="keyword">static</span> <span class="identifier">R</span> <a class="link" href="addable.html#id-1_3_41_13_24_1_1_6_2_1-bb"><span class