Standard C++ Library Class Reference

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unary_negate
Function Adaptor (Negator)
Summary
Function object that returns the complement of the result of its unary predicate
Contents
Synopsis●
Description●
Interface●
Constructor●
Operator●
See Also●
Synopsis
#include<functional>
template <class Predicate>
class unary_negate : public unary_function<typename
Predicate::argument_type,
bool>;
Description
unary_negate is a function object class that provides a return type for the function adaptor not1. 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.
Note that not1 works only with function objects that are defined as subclasses of the class
unary_function.