C++ In a Nutshell

Name

unary_negate class template — Logical negation of a unary predicate

Synopsis

template <typename P>
class unary_negate :
  public unary_function<typename P::argument_type,bool>
{
public:
  explicit unary_negate(const P& predicate);
  bool operator(  )(const typename P::argument_type& x) const;
};

The unary_negate class template is a binary functional that returns the logical negation of another unary functional—that is, operator( ) returns !predicate(x). The simplest way to use unary_negate is to use the not1 function template.

See Also

binary_negate class template, not1 function template