Trait scale_info::prelude::ops::BitAnd
1.0.0 · source · pub trait BitAnd<Rhs = Self> {
type Output;
// Required method
fn bitand(self, rhs: Rhs) -> Self::Output;
}Expand description
The bitwise AND operator &.
Note that Rhs is Self by default, but this is not mandatory.
§Examples
An implementation of BitAnd for a wrapper around bool.
use std::ops::BitAnd;
#[derive(Debug, PartialEq)]
struct Scalar(bool);
impl BitAnd for Scalar {
type Output = Self;
// rhs is the "right-hand side" of the expression `a & b`
fn bitand(self, rhs: Self) -> Self::Output {
Self(self.0 & rhs.0)
}
}
assert_eq!(Scalar(true) & Scalar(true), Scalar(true));
assert_eq!(Scalar(true) & Scalar(false), Scalar(false));
assert_eq!(Scalar(false) & Scalar(true), Scalar(false));
assert_eq!(Scalar(false) & Scalar(false), Scalar(false));An implementation of BitAnd for a wrapper around Vec<bool>.
use std::ops::BitAnd;
#[derive(Debug, PartialEq)]
struct BooleanVector(Vec<bool>);
impl BitAnd for BooleanVector {
type Output = Self;
fn bitand(self, Self(rhs): Self) -> Self::Output {
let Self(lhs) = self;
assert_eq!(lhs.len(), rhs.len());
Self(
lhs.iter()
.zip(rhs.iter())
.map(|(x, y)| *x & *y)
.collect()
)
}
}
let bv1 = BooleanVector(vec![true, true, false, false]);
let bv2 = BooleanVector(vec![true, false, true, false]);
let expected = BooleanVector(vec![true, false, false, false]);
assert_eq!(bv1 & bv2, expected);