TupleTools
Provides utility functions like fst and snd. In development.
Works with #[no_std] !
Example:
Provides utility functions like fst and snd. In development.
Works with #[no_std] !
#[test]
fn fst() {
let x = vec![(2, 3), (3, 4), (4, 5), (5, 6)];
let expected = vec![2, 3, 4, 5];
assert_eq!(x.iter().map(Fst::fst).cloned().collect::<Vec<_>>(), expected);
assert_eq!(x.into_iter().map(Fst::into_fst).collect::<Vec<_>>(), expected);
}
#[test]
fn snd() {
let x = vec![(2, 3), (3, 4), (4, 5), (5, 6)];
let expected = vec![3, 4, 5, 6];
assert_eq!(x.iter().map(Snd::snd).cloned().collect::<Vec<_>>(), expected);
assert_eq!(x.into_iter().map(Snd::into_snd).collect::<Vec<_>>(), expected);
}