Standard C++ Library Class Reference

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not1

Function Adaptor

Summary

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

Contents

Synopsis●

Description●

See Also●

Synopsis

#include <functional>

template<class Predicate>

unary_negate <Predicate> not1 (const Predicate&);

Description

not1 is a function adaptor, known as a negator, that takes a unary predicate function object as its

argument and returns a unary predicate function object that is the complement of the original.

unary_negate is a function object class that provides a return type for the not1 negator.

Note that not1 works only with function objects that are defined as subclasses of the class

unary_function.