 or an adaptable unary
function object (i.e., a class derived from
<tt><nobr>std::unary_function</nobr></tt> or one which provides the
same typedefs).  (See &sect;20.3.1 in the C++ Standard.)

<p><tt><nobr>binary_traits</nobr></tt> should be instantiated with
either a function taking two parameters, or an adaptable binary
function object (i.e., a class derived from
<tt><nobr>std::binary_function</nobr></tt> or one which provides the
same typedefs).  (See &sect;20.3.1 in the C++ Standard.)

<p>The most commo