[Haskell-cafe] Re: Why do I need a 'do'?

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import System.Random

rollDice :: IO Int rollDice = getStdRandom (randomR (1,6))

rollNDice :: Int -> [IO Int] rollNDice 0 = [] rollNDice n = rollDice : rollNDice (n-1)

replicateM n rollDice

http://www.haskell.org/haskellwiki/Avoiding_IO#State_monad

Or, if you want the original idea: sequence (rollNDice 10) Check the type of sequence at Control.Monad. Maurício