Function permutations

pub fn permutations<'a, T: Copy>(
    s1: &'a [T],
    s2: &'a [T],
) -> impl Iterator<Item = ((T, T), (T, T))> + 'a

Available on crate feature regression only.

Unique permutations of two elements - an iterator of all the pairs of associated values in the slices.

This function will behave unexpectedly if s1 and s2 have different lengths.

Returns an iterator which yields O(n²) items.