17 Sep
2005
17 Sep
'05
4:43 a.m.
Hello Jason, Saturday, September 17, 2005, 10:14:14 AM, you wrote: JD> class? I also wish that "if" were a function, but that's probably JD> just the lisper in me speaking. Something like:
if :: Bool b =>> b -> a -> a-> a
no problem! iif :: Bool -> a -> a -> a iif a b c = if a then b else c anyway, Haskell use lazy evaluation ;) really, i developed a lot of control structures for I/O monad about making Bool a class - it is the same issue as making head/map/... belonging to some Collection class. we need to change standard Prelude or add to Haskell "supertyping" mechanism, proposed by John Meacham, as i remember -- Best regards, Bulat mailto:bulatz@HotPOP.com