Bill Wood <[EMAIL PROTECTED]> writes: >> The variable mem is a so-called hybrid variable; it crunches >> together 2 different concepts: a boolean value (could I allocate >> memory?) and an address value (what is the address where I can find >> my allocated memory).
IMO, Maybe is exactly the oppsite, it extends a data type with a NULL value (to use DB terminology), and leaves no opportunity for confusing the extended type with the original. > I mostly agree with the "tightening-up", but there are times when I > really miss the nil hacks :-) In Haskell as well? I alwasy felt the cost of inserting a "null" predicate (when I want to test for an empty list) to be low. -k -- If I haven't seen further, it is by standing in the footprints of giants _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe