[Haskell-beginners] Re: Eliminate repetitive monad/list code

Thank you very much, this is just the right solution. On 04/11/2010 18:33, Tobias Brandt wrote:

On 4 November 2010 17:19, John Smith wrote:

...

foo :: IO A

bar :: Bool -> A -> Int -> Bool -> IO ()

bar' a b = bar True a b False

do x<- foo y<- foo z<- foo

bar x 1 bar y 2 bar z 3

but I don't know what to do next. Is there some form of list comprehension or combination of map and lift which will eliminate the repetition?

mapM_ (\x -> foo>>= flip bar x) [1,2,3]