Function sort_slice_rev_unstable_by_path_key 

pub fn sort_slice_rev_unstable_by_path_key<A, T: ?Sized + AsRef<Path>, F: FnMut(&A) -> &T>(
    slice: &mut [A],
    f: F,
)

Available on crate feature std only.

Reversely sort a slice by a Path key, but may not preserve the order of equal elements.