> Is it just the difficulty? It's loads to unlearn for most of programmers and a perfectly natural knee-jerk reaction of a refusal to. I mean, the more one kno

> Is it just the difficulty? It's loads to unlearn for most of programmers and a perfectly natural knee-jerk reaction of a refusal to. I mean, the more one knows already, the more is the desire to reuse such knowledge. Well, at least I have been there. > Haskell doesn't, really (from my cursory reading about it). Of course it does, https://en.wikibooks.org/wiki/Haskell/Mutable_objects https://en.wikibooks.org/wiki/Haskell/Mutable_objects looks a good start.