Optimizing Haskell code

Question

I\'m trying to learn Haskell and after an article in reddit about Markov text chains, I decided to implement Markov text generation first in Python and now in Haskell. Howev

Answer 1

a) How are you compiling it? (ghc -O2 ?)

b) Which version of GHC?

c) Data.Map is pretty efficient, but you can be tricked into lazy updates -- use insertWith' , not insertWithKey.

d) Don't convert bytestrings to String. Keep them as bytestrings, and store those in the Map