[Haskell-cafe] How to print a string (lazily)
donn at drizzle.com
Tue Jan 3 13:11:33 EST 2006
On Tue, 3 Jan 2006, Chris Kuklewicz wrote:
> I sometimes call a function with side-effects in IO a "command". But
> the terms are fungible. But calling putStr a "function" is correct. It
> is not a "pure function" however.
Is that the standard party line? I mean, we all know its type and
semantics, whatever you want to call them, but if we want to put names
to things, I had the impression that the IO monad is designed to work
in a pure functional language - so that the functions are indeed actually
pure, including putStr. It's the monad that actually incurs the side
effects. Or something like that. So it isn't at all necessary to have
another word for functions of type IO a.
Donn Cave, donn at drizzle.com
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