n class="identifier">vector_type</span><span class="special">;</span>           
  <span class="keyword">typedef</span> <span class="identifier">vector_type</span><span class="special">::</span><span class="identifier">value_type</span>                         <a name="boost.compute.flat_map.value_type"></a><span class="identifier">value_type</span><span class="special">;</span>            
  <span class="keyword">typedef</span> <span class="identifier">vector_type</span><span class="special">::</span><span