On Thu, Feb 5, 2009 at 3:21 PM, David Leimbach <leim...@gmail.com> wrote:
> > Well all I can tell you is that I can have (IO Int) in a function as a > return, and the function is not idempotent in terms of the "stuff" inside IO > being the same. > > Sounds impure to me. > Right, thus IO is impure. but as long as the function that returns the IO Int returns the same IO Int every time you provide the same input, it's pure.
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