Tony Morris

@djspiewak awesome, thank you for your thoughtful comment. it is very helpful, and it helps me understand.

@marius :-) You're very welcome. The functor composition is the most immediate thing I saw. I would need to look more closely.

@djspiewak dude. Every scala functor violates the law you describe. Functions can close mutable state cc> @marius

@jsuereth @marius Even if a function doesn't close over mutable state, Try still exposes impurity.

@djspiewak @marius if you limit to non-catching functions?

@jsuereth @marius Throwing an exception isn't impure. It's true that catching one is though.