Once you wrap your head around the Haskell way, it seems easy to get something working. IMHO that something will be minimal and pretty as well. Once  i try to make things fast, it gets weird. There are people who can write very fast Haskell code, but it seems like all of those people worked on ghc. I don&#x27;t have a good mental model of when, say, a thunk will get created, so i liberally sprinkle strictness annotations, and fool around with list fusion operations.<p>I really like Haskell. Even with all the effort i&#x27;ve put into it, it seems like i&#x27;ve barely scratched the surface if i want performance. <i>sigh</i>