Standard C++ Library Class Reference

Click on the banner to return to the Class Reference home page.

not_equal_to

Function Object

Summary

Binary function object that returns true if its first argument is not equal to its second.

Contents

Synopsis●

Description●

Interface●

Warning●

See Also●

Synopsis

#include <functional>

template <class T>

struct not_equal_to : public binary_function<T, T, bool> ;

Description

not_equal_to is a binary function object. Its operator() returns true if x is not equal to y. You can pass a

not_equal_to object to any algorithm that requires a binary function. For example, the transform

algorithm applies a binary operation to corresponding values in two collections and stores the result.

not_equal_to would be used in that algorithm in the following manner:

vector<int> vec1;

vector<int> vec2;

vector<int> vecResult;

transform(vec1.begin(), vec1.end(), vec2.begin(),