Re: [Haskell-cafe] stack overflow pain

Tim Docker writes:

mapM_ applyAction sas

Maybe you could try a lazy version of mapM? E.g., I think this would do it: import System.IO.Unsafe (unsafeInterleaveIO) : mapM' f = sequence' . map f where sequence' ms = foldr k (return []) ms k m m' = do { x <- m; xs <- unsafeInterleaveIO m'; return (x:xs) } -k -- If I haven't seen further, it is by standing in the footprints of giants