August 2017 1HaskellADay 1Liners Problems and Solutions

• August 1st, 2017:
f :: (Maybe a, b) -> Maybe (a, b) Define points-free.
• August 1st, 2017:
  Given f above and f a and f b are mutually exclusive in Maybe monad, define
  g :: Maybe (a, b) -> Maybe (a, b) -> (Maybe a, b)
  points free
• August 1st, 2017:
  Now, let's define the dual of f
  f' :: Maybe (a, b) -> (Maybe a, b)
  points free