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Trait std::ops::BitAndAssign

#[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));

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);

Required Methods

Performs the &= operation.

Implementors

impl BitAndAssign<bool> for bool [src]

impl BitAndAssign<i128> for i128 [src]

impl BitAndAssign<i16> for i16 [src]

impl BitAndAssign<i32> for i32 [src]

impl BitAndAssign<i64> for i64 [src]

impl BitAndAssign<i8> for i8 [src]

impl BitAndAssign<isize> for isize [src]

impl BitAndAssign<u128> for u128 [src]

impl BitAndAssign<u16> for u16 [src]

impl BitAndAssign<u32> for u32 [src]

impl BitAndAssign<u64> for u64 [src]

impl BitAndAssign<u8> for u8 [src]

impl BitAndAssign<usize> for usize [src]

impl BitAndAssign<Wrapping<i128>> for Wrapping<i128> [src]

impl BitAndAssign<Wrapping<i16>> for Wrapping<i16> [src]

impl BitAndAssign<Wrapping<i32>> for Wrapping<i32> [src]

impl BitAndAssign<Wrapping<i64>> for Wrapping<i64> [src]

impl BitAndAssign<Wrapping<i8>> for Wrapping<i8> [src]

impl BitAndAssign<Wrapping<isize>> for Wrapping<isize> [src]

impl BitAndAssign<Wrapping<u128>> for Wrapping<u128> [src]

impl BitAndAssign<Wrapping<u16>> for Wrapping<u16> [src]

impl BitAndAssign<Wrapping<u32>> for Wrapping<u32> [src]

impl BitAndAssign<Wrapping<u64>> for Wrapping<u64> [src]

impl BitAndAssign<Wrapping<u8>> for Wrapping<u8> [src]

impl BitAndAssign<Wrapping<usize>> for Wrapping<usize> [src]

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/ops/trait.BitAndAssign.html