C++ In a Nutshell

Name

unary_function class template — Base class for unary functionals

Synopsis

template <typename Arg, typename Result>
struct unary_function {
  typedef Arg argument_type;
  typedef Result result_type;
};

The unary_function template is a base class for all the function classes that represent unary operations. It provides standard names for the argument and result types.

See Also

binary_function class template, binder1st class template, binder2nd class template, const_mem_fun_ref_t class template, const_mem_fun_t class template, mem_fun_ref_t class template, mem_fun_t class template, negate class template, pointer_to_unary_function class template, unary_negate class template