  <span class="keyword">typedef</span> <span class="identifier">super_type</span><span class="special">::</span><span class="identifier">value_type</span>      <a name="boost.compute.transform_iterator.value_type"></a><span class="identifier">value_type</span><span class="special">;</span>     
  <span class="keyword">typedef</span> <span class="identifier">super_type</span><span class="special">::</span><span class="identifier">reference</span>       <a name="boost.compute.transform_iterator.reference"></a