Easiest way to convert "a/b/c" to ["a/b/c", "a/b", "a"]

Question

In Ruby, I'd like to convert a slash-separate String such as "foo/bar/baz" into ["foo/bar/baz", "foo/bar", "foo"]. I already have solutions a few lines long; I'm looking for an elegant one-liner. It also needs to work for arbitrary numbers of segments (0 and up).

Answer 1

"foo/bar/baz".enum_for(:scan, %r{/|$}).map {Regexp.last_match.pre_match}