[Haskell-beginners] mapM etc.

[Alexey G]

Try this:

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


2011/7/1 Dennis Raddle <dennis.raddle at gmail.com>

> 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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