<map id="Graphical Class Hierarchy" name="Graphical Class Hierarchy"> <area shape="rect" id="node1" href="$a06349.html" title="std::unary_function\l\< _T1, _Res \>" alt="" coords="5,12,131,51"/> <area shape="rect" id="node2" href="$a02269.html" title="Derives from unary_function, as appropriate. " alt="" coords="179,5,333,57"/> </map>