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# std::bitset::operator&=,|=,^=,~

From cppreference.com
< cpp‎ | utility‎ | bitset

bitset<N>& operator&=( const bitset<N>& other ); | (1) |
bitset<N>& operator|=( const bitset<N>& other ); | (2) |
bitset<N>& operator^=( const bitset<N>& other ); | (3) |
bitset<N> operator~() const; | (4) |

Performs binary AND, OR, XOR and NOT.

1) Sets the bits to the result of binary AND on corresponding pairs of bits of `*this` and `other`.
2) Sets the bits to the result of binary OR on corresponding pairs of bits of `*this` and `other`.
3) Sets the bits to the result of binary XOR on corresponding pairs of bits of `*this` and `other`.
4) Returns a temporary copy of `*this` with all bits flipped (binary NOT).

Note that &=, |=, and ^= are only defined for bitsets of the same size `N`.

### [edit] Parameters

other | - | another bitset

### [edit] Return value

1-3) *this
4) bitset<N>(*this).flip()

### [edit] Exceptions

(none) | (until C++11)
`noexcept` specification: noexcept | (since C++11)

### [edit] Example

Run this code

    #include <iostream>
    #include <string>
    #include <bitset>

    int main()
    {
        std::bitset<16> dest;
        std::string pattern_str = "1001";
        std::bitset<16> pattern(pattern_str);

        for (size_t i = 0, ie = dest.size()/pattern_str.size(); i != ie; ++i) {
            dest <<= pattern_str.size();
            dest |= pattern;
        }
        std::cout << dest << '\n';
    }

Output:

    1001100110011001

### [edit] See also

operator<<=operator>>=operator<<operator>> | performs binary shift left and shift right (public member function) [edit]

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