> one other way is basically introducing mutability to Haskell which totally doesn't make sense It makes perfect sense, because Haskell is not "an immutable la

> one other way is basically introducing mutability to Haskell which totally doesn't make sense It makes perfect sense, because Haskell is not "an immutable language". It's a language in which some things are immutable, and those that are not are explicitly indicated in the type system.