Ruby: Split string at character, counting from the right side

Question

Short version -- How do I do Python rsplit() in ruby?

Longer version -- If I want to split a string into two parts (name, suffix) at the first \'.\' character, this

Answer 1

Here's what I'd actually do:

/(.*)\.(.*)/.match("what.to.do")[1..2]
=> ["what.to", "do"]

or perhaps more conventionally,

s = "what.to.do"

s.match(/(.*)\.(.*)/)[1..2]
=> ["what.to", "do"]