Standard C++ Library Class Reference

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not2

Function Adaptor

Summary

Function adaptor used to reverse the sense of a binary predicate function object.

Contents

Synopsis●

Description●

See Also●

Synopsis

#include <functional>

template <class Predicate>

binary_negate<Predicate> not2 (const Predicate& pred);

Description

not2 is a function adaptor, known as a negator, that takes a binary predicate function object as

its argument and returns a binary predicate function object that is the complement of the

original. binary_negate is a function object class that provides a return type for the not2

negator.

Note that not2 works only with function objects that are defined as subclasses of the class

binary_function.