> In Haskell, updating fields in a records is still an active area research. In Haskell, everything is still an active area of research. Mutable data already e

> In Haskell, updating fields in a records is still an active area research. In Haskell, everything is still an active area of research. Mutable data already exists in Haskell and has sensible semantics. But the goal of Haskell (so far as I can see, at least) is good, reliable, maintainable code which produces good, reliable, maintainable programs. If this is not what you look for in a programming language then it might not be for you.