mgmeier

{-# LANGUAGE BangPatterns #-}

{-
    Scenario / preconditions for the usefulness of this ring buffer:

    - mutable data structure
    - elements of the same size (here: ByteString, extending to values of class Storable should be trivial)
    - each element is denoted by a continuous Int id

    - main benefit, esp. for a large number of elements:

mgmeier

module Main(main) where

import Data.Maybe
import Data.List

-- Data table copied from https://matthewearl.github.io/2015/12/10/gchq-xmas-card/
width = 25
height = 25
rows = [