[Haskell-cafe] Re: Can we come out of a monad?

Daniel Díaz lazy.ddiaz at gmail.com
Fri Jul 30 06:17:26 EDT 2010

I don't understand why to call "impure" to the types instances of a class.
Monad is simply a class with their methods. Even the "pure" list is a monad.
The only difference between Monad and other classes is do notation, and only
affects notation.

The "impure" side is a type, not a class: IO.
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