[Haskell-cafe] map in IO

What is the best way to perform a map inside IO? I defined the following function, but this must be common enough to warrant something in the standard library. What am I missing? -Tom mapIO :: (a - IO b) - [a] - IO [b] mapIO _ [] = return [] mapIO f (x:xs) = do y - f x

Re: [Haskell-cafe] map in IO

the similar function: mapM :: Monad m = (a - m b) - [a] - m [b] should do the trick for you, and is in the prelude. /g ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe