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By mswatcher
via chris-taylor.github.com
Submitted: Feb 09 2013 / 12:33

A common question amongst people learning Haskell is whether I/O is pure or not. Haskell advertises itself as a purely functional programming language, but I/O looks like it’s inherently impure - for example, the function getLine, which gets a line from stdin, returns a different result depending on what the user type
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