# Trait core::ops::BitAndAssign 1.8.0[−][src]

    #[lang = "bitand_assign"]
    pub trait BitAndAssign<Rhs = Self> {
        fn bitand_assign(&mut self, rhs: Rhs);
    }

The bitwise AND assignment operator `&=`.

# Examples

An implementation of `BitAndAssign` that lifts the `&=` operator to a wrapper around `bool`.

    use std::ops::BitAndAssign;

    #[derive(Debug, PartialEq)]
    struct Scalar(bool);

    impl BitAndAssign for Scalar {
        // rhs is the "right-hand side" of the expression `a &= b`
        fn bitand_assign(&mut self, rhs: Self) {
            *self = Scalar(self.0 & rhs.0)
        }
    }

    let mut scalar = Scalar(true);
    scalar &= Scalar(true);
    assert_eq!(scalar, Scalar(true));

    let mut scalar = Scalar(true);
    scalar &= Scalar(false);
    assert_eq!(scalar, Scalar(false));

    let mut scalar = Scalar(false);
    scalar &= Scalar(true);
    assert_eq!(scalar, Scalar(false));

    let mut scalar = Scalar(false);
    scalar &= Scalar(false);
    assert_eq!(scalar, Scalar(false));Run

Here, the `BitAndAssign` trait is implemented for a wrapper around `Vec<bool>`.

    use std::ops::BitAndAssign;

    #[derive(Debug, PartialEq)]
    struct BooleanVector(Vec<bool>);

    impl BitAndAssign for BooleanVector {
        // `rhs` is the "right-hand side" of the expression `a &= b`.
        fn bitand_assign(&mut self, rhs: Self) {
            assert_eq!(self.0.len(), rhs.0.len());
            *self = BooleanVector(self.0
                                      .iter()
                                      .zip(rhs.0.iter())
                                      .map(|(x, y)| *x && *y)
                                      .collect());
        }
    }

    let mut bv = BooleanVector(vec![true, true, false, false]);
    bv &= BooleanVector(vec![true, false, true, false]);
    let expected = BooleanVector(vec![true, false, false, false]);
    assert_eq!(bv, expected);Run

## Required Methods

### `fn bitand_assign(&mut self, rhs: Rhs)`

Performs the `&=` operation.

## Implementors

- `impl BitAndAssign for Wrapping<usize>` | [src]

- `impl<'a> BitAndAssign<&'a Wrapping<usize>> for Wrapping<usize>` | [src]

- `impl BitAndAssign for Wrapping<u8>` | [src]

- `impl<'a> BitAndAssign<&'a Wrapping<u8>> for Wrapping<u8>` | [src]

- `impl BitAndAssign for Wrapping<u16>` | [src]

- `impl<'a> BitAndAssign<&'a Wrapping<u16>> for Wrapping<u16>` | [src]

- `impl BitAndAssign for Wrapping<u32>` | [src]

- `impl<'a> BitAndAssign<&'a Wrapping<u32>> for Wrapping<u32>` | [src]

- `impl BitAndAssign for Wrapping<u64>` | [src]

- `impl<'a> BitAndAssign<&'a Wrapping<u64>> for Wrapping<u64>` | [src]

- `impl BitAndAssign for Wrapping<u128>` | [src]

- `impl<'a> BitAndAssign<&'a Wrapping<u128>> for Wrapping<u128>` | [src]

- `impl BitAndAssign for Wrapping<isize>` | [src]

- `impl<'a> BitAndAssign<&'a Wrapping<isize>> for Wrapping<isize>` | [src]

- `impl BitAndAssign for Wrapping<i8>` | [src]

- `impl<'a> BitAndAssign<&'a Wrapping<i8>> for Wrapping<i8>` | [src]

- `impl BitAndAssign for Wrapping<i16>` | [src]

- `impl<'a> BitAndAssign<&'a Wrapping<i16>> for Wrapping<i16>` | [src]

- `impl BitAndAssign for Wrapping<i32>` | [src]

- `impl<'a> BitAndAssign<&'a Wrapping<i32>> for Wrapping<i32>` | [src]

- `impl BitAndAssign for Wrapping<i64>` | [src]

- `impl<'a> BitAndAssign<&'a Wrapping<i64>> for Wrapping<i64>` | [src]

- `impl BitAndAssign for Wrapping<i128>` | [src]

- `impl<'a> BitAndAssign<&'a Wrapping<i128>> for Wrapping<i128>` | [src]

- `impl BitAndAssign for bool` | [src]

- `impl<'a> BitAndAssign<&'a bool> for bool` | [src]

- `impl BitAndAssign for usize` | [src]

- `impl<'a> BitAndAssign<&'a usize> for usize` | [src]

- `impl BitAndAssign for u8` | [src]

- `impl<'a> BitAndAssign<&'a u8> for u8` | [src]

- `impl BitAndAssign for u16` | [src]

- `impl<'a> BitAndAssign<&'a u16> for u16` | [src]

- `impl BitAndAssign for u32` | [src]

- `impl<'a> BitAndAssign<&'a u32> for u32` | [src]

- `impl BitAndAssign for u64` | [src]

- `impl<'a> BitAndAssign<&'a u64> for u64` | [src]

- `impl BitAndAssign for u128` | [src]

- `impl<'a> BitAndAssign<&'a u128> for u128` | [src]

- `impl BitAndAssign for isize` | [src]

- `impl<'a> BitAndAssign<&'a isize> for isize` | [src]

- `impl BitAndAssign for i8` | [src]

- `impl<'a> BitAndAssign<&'a i8> for i8` | [src]

- `impl BitAndAssign for i16` | [src]

- `impl<'a> BitAndAssign<&'a i16> for i16` | [src]

- `impl BitAndAssign for i32` | [src]

- `impl<'a> BitAndAssign<&'a i32> for i32` | [src]

- `impl BitAndAssign for i64` | [src]

- `impl<'a> BitAndAssign<&'a i64> for i64` | [src]

- `impl BitAndAssign for i128` | [src]

- `impl<'a> BitAndAssign<&'a i128> for i128` | [src]

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