ref="push_front.html" title="Struct push_front">push_front</a> <span class="special">{</span>
  <span class="comment">// types</span>
  <span class="keyword">typedef</span> <span class="keyword">void</span> <a name="boost.xpressive.op.push_front.result_type"></a><span class="identifier">result_type</span><span class="special">;</span>

  <span class="comment">// <a class="link" href="push_front.html#idp114854080-bb">public member functions</a></span>
  <span class="keyword">template</span><span class="speci