nal.html#boost.signals2.signal.extended_slot_type"><span class="identifier">extended_slot_type</span></a><span class="special">;</span>         
  <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">SlotFunction</span><span class="special">::</span><span class="identifier">result_type</span>                                                 <a class="link" href="signal.html#boost.signals2.signal.slot_result_type"><span class="identifier">slot_result_type</span><