Re: [Haskell-beginners] mapM etc.

Try this:

mapM (\x -> getDeviceInfo x >>= print . name) [0..10]

2011/7/1 Dennis Raddle

It's been about a year since I used Haskell and I'm rusty. I think I knew how to do this once, but I need a reminder.

I've got some functions:

getDeviceInfo :: Int -> IO DeviceInfo

name :: DeviceInfo -> String

I want to do something like

func :: IO () func = do ds <- mapM getDeviceInfo [0..10] mapM_ (print . name) ds

Is there a way to combine 'getDeviceInfo', 'name', and 'print' in one line?

Dennis

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