As codygman mentions the IO Monad doesn't make haskell impure. unsafePerformIO :... | Hacker News

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		karshan on Jan 16, 2015 \| parent \| context \| favorite \| on: Why Clojure? As codygman mentions the IO Monad doesn't make haskell impure. unsafePerformIO :: IO a -> a on the other hand does make haskell impure when it is used. And it is used in many libraries.

tome on Jan 16, 2015 | [–]

> unsafePerformIO :: IO a -> a on the other hand does make haskell impure when it is used. And it is used in many libraries.

Hmm, does it really? Is 'unsafePerformIO (return 1)' impure?

dllthomas on Jan 17, 2015 | [–]

"And it is used in many libraries."

Citation needed - or at least clarification as to what "many" means here.

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