Haskell programs are so phenomenally easy to refactor in deep and complex ways it's unreal. I have been astonished over and over again. (That said the state o

Haskell programs are so phenomenally easy to refactor in deep and complex ways it's unreal. I have been astonished over and over again. (That said the state of automated, trivial refactorings (like renaming identifiers) is probably much better in other languages.)