Look for the function replicateM in the module Control.Monad. On 25 July 2010 17:39, michael rice <nowg...@yahoo.com> wrote:
> Hi All, > > From: http://en.wikibooks.org/wiki/Haskell/Understanding_monads/State > > Exercises > > 1. Implement a function rollNDiceIO :: Int -> IO [Int] that, > given an integer, returns a list with that number of pseudo- > random integers between 1 and 6. > > > After a lot of learning what not to do, this is the best I could come up > with. > > rollNDiceIO :: Int -> IO [Int] > rollNDiceIO n = mapM (\x -> randomRIO(1,6)) (replicate n 1) > > I know, ugly, but at least I got it to work. What's a better way to > generate this list? > > Michael > > > > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe > >
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