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

 

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eraseerase_if (C++20)(C++20)

operator==operator!=operator<operator>operator<=operator>=operator<=> (until C++20)(until C++20)(until C++20)(until C++20)(until C++20)(C++20)

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Defined in header <vector>
void flip();		(until C++20)
constexpr void flip();		(since C++20)

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

Parameters

(none)

Return value

(none)

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

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