Re: [Haskell-cafe] Parsec float

On Saturday 30 May 2009 03:10:11 Bryan O'Sullivan wrote:

On Fri, May 29, 2009 at 5:04 PM, Bartosz Wójcik wrote:

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I don't undersdand what is being missed.

Brevity.

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liftM f m1 = do { x1 <- m1; return (f x1) } so liftM fromIntegral integer will result the same.

Yes, and there's less code to read if you use liftM or <$>, hence fewer moving parts to understand.

OK, thats clear. BTW: reading RWH I could not memorize what those liftM funtions meant. Best, Bartek