intersection

Returns the elements of a that also appear in b, in a’s order.

Duplicates in a are kept: only membership in b decides whether an element stays.

Import

use helpers4::array::intersection;

Cargo feature array (enabled by default). To compile only this module:

cargo add helpers4 --no-default-features --features array

or in Cargo.toml:

[dependencies]
helpers4 = { version = "0.0.5", default-features = false, features = ["array"] }

Signature

pub fn intersection<T: Clone + Eq + Hash>(a: &[T], b: &[T]) -> Vec<T>

Parameters

Parameter	Type	Description
a	&[T]	The first slice.
b	&[T]	The second slice.

Returns

Vec<T>

Examples

use helpers4::array::intersection;

assert_eq!(intersection(&[1, 2, 3, 2], &[2, 3, 4]), vec![2, 3, 2]);
assert_eq!(intersection(&[1], &[2]), Vec::<i32>::new());

Source

src/array/intersection.rs