pub fn build_index_map<T, F, R>(keys: &[T], transform_index: F) -> HashMap<T, R> where
    F: Fn(&T, usize) -> R,
    T: Clone + Hash + PartialEq + Eq
Expand description

Build a mapping from elements of the given vector to their respective indices.

Warning: Duplicates are not detected or handled in any way, they are just overwritten.