Namespaces
Variants

std::vector<bool,Allocator>:: flip

From cppreference.net
C++
Containers library
std::vector<bool>
Member types
Member functions
Non-member functions
(until C++20) (until C++20) (until C++20) (until C++20) (until C++20)
Helper classes
(C++11)
Deduction guides (C++17)
Defined in header <vector>
void flip ( ) ;
(constexpr since C++20)

Toggles each bool (replaces with its opposite value) in the vector .

Example

Run this code 
#include <iostream>
#include <vector>
void print(const std::vector<bool>& vb)
{
    for (const bool b : vb)
        std::cout << b;
    std::cout << '\n';
}
int main()
{
    std::vector<bool> v{0, 1, 0, 1};
    print(v);
    v.flip();
    print(v);
}

Output: 

0101
1010

See also

access specified element
(public member function of std::vector<T,Allocator> )
toggles the values of bits
(public member function of std::bitset<N> )