<map id="Graphical Class Hierarchy" name="Graphical Class Hierarchy">
<area shape="rect" id="node1" href="$a00939.html" title="std::unary_function\l\&lt; _Pair, _Pair::second\l_type \&gt;" alt="" coords="6,5,149,57"/>
<area shape="rect" id="node3" href="$a00067.html" title="An SGI extension ." alt="" coords="197,11,339,50"/>
</map>