Haskell is a really great programming language. It is elegant, the type system is beautiful, and nowadays the compiler is quite good. I've been using functional languages off and on for more than 30 years. I studied at the University of Kent which is the home Miranda which is a precursor to Haskell. All this is a warning. I don't use Haskell that much. The language has changed a lot since I last used it regularly, and so my code might not be optimal or idiomatic Haskell.