2 May
2008
2 May
'08
11:38 a.m.
2008/5/1 Galchin, Vasili
Sorry .. my example was bad. I want to use "x" .. in then branch where it occur ...
e.g. bonzo :: Maybe Bozo -> IO () bonzo maybe_bozo = do case maybe_bozo of Just (Bozo x) -> x ........ _ -> .........
??
Sure, after pattern-matching on the x (using a case, or a top-level pattern match), you are free to use x in the resulting branch. For example: bonzo (Just (Bozo x)) = print (show x) >> return x -- or whatever bonzo Nothing = return () -Brent