Re: [Haskell-cafe] One-shot? (was: Global variables and stuff)

So you say (and I do agree). But how can I *observe* that they are the same?

Well, not with a single program run (obviously). But it is the case that for any program P and input sequence X (i.e., keys pressed): running P with X and running {foo = getChar; P'} with X (where P' is P with all occurrences of getChar replaced by foo) will behave identically. --KW 8-)