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

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]