Safe Haskell | Safe |
---|---|
Language | Haskell2010 |
Documentation
between :: Maybe Sortee -> Maybe Sortee -> Maybe Sortee Source #
Create a new sort string that is between the provided strings. For example:
between "a" "c" -- "b"
Laws:
a < (between a b) < b (between Nothing a) < a (between a Nothing) > a (between a a) == Nothing (between (Just a) (Just b)) == (between (Just b) (Just a))