depot - monorepo for the virus lounge

Age	Commit message (Collapse)	Author	Files	Lines
2020-07-01	Complete exercises for Reader and State chapters	William Carroll	1	-0/+149
	It's beautiful how State is just Reader that returns a tuple of (a, r) instead of just a, allowing you to modify the environment (i.e. state). ```haskell newtype Reader r a = Reader { runReader :: r -> a } newtype State s a = State { runState :: s -> (a, s) } ```