Safe Haskell	None
Language	Haskell2010

Day22

Description

Synopsis

Documentation

A cardinal direction.

Constructors

Node state.

Constructors

next :: (Bounded a, Enum a, Eq a) => a -> a Source #

succ with wraparound.

prev :: (Bounded a, Enum a, Eq a) => a -> a Source #

pred with wraparound.

Moves a Cartesian coordinate by one step in a direction.

Parses a string as a 2-D grid centered around (0, 0), returning positions with a # character.

day22 :: (Enum a, Eq a) => a -> (a -> O -> O) -> (a -> a) -> a -> Int -> [Z] -> Int Source #

Returns all viral activity from an initial state.