[jcora]

It's the other way around. State (and side effects) are explicit in pure programs, and implicit in impure programs.

[Twisol]

'tel said the same thing, and I can see it both ways. But I don't think it helps me much to simply state the opposite position -- you don't give me much to reply to :)

[mumblemumble]

They're generally explicit in both, albeit in different ways. They're first class (which isn't quite the same thing) in pure programs.