
I know this has been written about way too much, but I was wondering what people thought about using 'liftM f' as opposed to '>>= return . f'. I would probably have written Andrew's code using liftM, but I don't know if one is necessarily better than the other. Does anyone have strong thoughts on this? -- Hal Daume III "Computer science is no more about computers | hdaume@isi.edu than astronomy is about telescopes." -Dijkstra | www.isi.edu/~hdaume On Sun, 22 Sep 2002, Andrew J Bromage wrote:
G'day all.
On Sat, Sep 21, 2002 at 12:56:13PM -0700, Russell O'Connor wrote:
case (number g) of Just n -> Just (show n) Nothing -> case (fraction g) of Just n -> Just (show n) Nothing -> case (nimber g) of Just n -> Just ("*"++(show n)) Nothing -> Nothing
This isn't exactly the most beautiful way of doing it, but...
(number g >>= return . show) `mplus` (fraction g >>= return . show) `mplus` (nimber g >>= return . ('*':) . show)
Cheers, Andrew Bromage _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe