="special">{</span>
  <span class="comment">// member classes/structs/unions</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Sig<span class="special">&gt;</span> 
  <span class="keyword">struct</span> <a class="link" href="str/result.html" title="Struct template result">result</a> <span class="special">{</span>
  <span class="special">}</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</