boblettoj <bobletto...@msn.com> writes: > Yes sorry, that line should be indented, now it gives me a bigger error :( > What that line is trying to achieve is return a list where the first element > is the card at the given random number in the first list and the rest of the > list should be fed back in to shuffle along with a new random number. > > shuffle :: Int -> [a] -> [a] > shuffle i [] = [] > shuffle i cards = do > gen <- mkStdGen > return ([(cards!!i) : (shuffle (randomR (0, ((length cards)-2)) gen) > (delete (cards!!i) cards))])
First of all, why are you using a do block? Secondly, mkStdGen :: Int -> StdGen : you need to provide it with a number and it doesn't return a monadic value, so you can't use <- with it. Thirdly, have a look at randoms and randomRs. -- Ivan Lazar Miljenovic ivan.miljeno...@gmail.com IvanMiljenovic.wordpress.com _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
