[Haskell-cafe] Tetris

[Andrew Coppin]

If you were going to implement Tetris in Haskell, how would you do it?

(For that matter, has anybody already *done* it? It would probably make 
a nice example program...)

I'm particularly interested to know

1. How exactly would you do the graphical components? (Presumably 
there's some deep trickery with Gtk2hs that can draw free-form stuff 
like this.)

2. How do you implement a program that is fundamentally about state 
mutation in a programming language which abhors state mutation?