It was indeed my first Haskell program. So I'd take your comment as compliment. I have been a long time C++ programmer (https://stackoverflow.com/users/415784/n

It was indeed my first Haskell program. So I'd take your comment as compliment. I have been a long time C++ programmer (https://stackoverflow.com/users/415784/nawaz https://stackoverflow.com/users/415784/nawaz), so I know what kind of tools one should look for in another language when it comes to making the code performant. So that helped me.