a><span class="identifier">codomain_type</span><span class="special">;</span>             
  <span class="keyword">typedef</span> <span class="identifier">CodomainT</span>                                                                                                        <a name="boost.icl.map.mapped_type"></a><span class="identifier">mapped_type</span><span class="special">;</span>               
  <span class="keyword">typedef</span> <span class="identifier">CodomainT</span>                            