I would say: it is `Set` and `List` that are wrong in that example, not `for`. That said, `for` really does have some issues (enter https://github.com/oleg-py/b

I would say: it is `Set` and `List` that are wrong in that example, not `for`. That said, `for` really does have some issues (enter https://github.com/oleg-py/better-monadic-for/blob/master/README.md https://github.com/oleg-py/better-monadic-for/blob/master/RE...)