Hello Udo, Wednesday, December 13, 2006, 3:25:32 AM, you wrote:
Well, all you need to do is to throw out your OO-Think (and with it Typeable and casts) and you'll realize what you're actually doing here: you're passing functions. Say so and everything comes naturally.
Alfonso, you may be interested in reading the following pages where i put some examples of passing functions in the cases where OOP programmers use classes. after all, OOP class is just data+functions bundled together, while in Haskell these are separate concepts http://haskell.org/haskellwiki/OOP_vs_type_classes http://haskell.org/haskellwiki/IO_inside (look at "Example: a list of IO actions" and next chapters) -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com