pan><span class="identifier">N</span><span class="special">&gt;</span><span class="special">::</span><span class="identifier">type</span><span class="special">,</span>
    <span class="special">)</span><span class="special">&gt;</span><span class="special">::</span><span class="identifier">type</span>
   <a name="boost.proto.context.callable_eval.result_type"></a><span class="identifier">result_type</span><span class="special">;</span>

  <span class="comment">// <a class="link" href="callable_eval.html#id-