2007/1/11, Marco Túlio Gontijo e Silva <[EMAIL PROTECTED]>:
Hello,is there a way to defined something as a map to use in tuples? I tried this: mapTuple f (a, b) = (f a, f b) But the type inferred to it is not as generic as I wanted: mapTuple :: (t -> t1) -> (t, t) -> (t1, t1) Then I tried a different, but not much, implementation: mapTuple' f g (a, b) = (f a, g b) mapTuple f = mapTuple' f f But the inferred type was the same. Is there a way to define a function in which I can be able to do something as this? mapTuple show ("string", True)
Hi, you might want invistigate "heterogeneous lists" : in your case, it's "heterogeneous typle". There's a page lying on the wiki I think... It involves typeclasses and type quantifiers. Ciao, minh thu _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
