ml" title="Struct template to_log_fun">to_log_fun</a> <span class="special">{</span>
  <span class="comment">// types</span>
  <span class="keyword">typedef</span> <span class="keyword">void</span> <a name="boost.log.to_log_fun.result_type"></a><span class="identifier">result_type</span><span class="special">;</span>

  <span class="comment">// <a class="link" href="to_log_fun.html#idm35523-bb">public member functions</a></span>
  <span class="keyword">template</span><span class="special">&lt;</span><span c