https://lettier.github.io/posts/2016-08-15-making-movie-monad.html https://lettier.github.io/posts/2016-08-15-making-movie-mona... walks you through making a mo

https://lettier.github.io/posts/2016-08-15-making-movie-monad.html https://lettier.github.io/posts/2016-08-15-making-movie-mona... walks you through making a movie player in Haskell.