Re: [Haskell] Laziness and the IO Monad (randomness)

Dave Tapley wrote:

This code show a trivial case where randomness (and hence the IO monad) is not used and the first 10 elements of the produced list are printed:

You don't need the IO monad to achieve pseudy-randomness. Why not use 'randoms' from System.Random (or 'randomRs' for a range). take 10 $ (randomRs (1,6) (mkStdGen 1)) :: [Int] You can use the IO monad to get a randomly seeded generator from the outside, but once seeded, just use the list. gen <- newStdGen take 10 $ (randomRs (1,6) gen) :: [Int] Dave