Hello Grady, Friday, December 29, 2006, 10:12:12 AM, you wrote:
not get that in the way I want. I suppose there may have to be some slowdown -- if the compiler specializes every piece of code for every instance of a typeclass it might encounter, it could bloat the executable beyond all reason. I'll have to do some tests to see if I notice an effect in practice.
yes. ghc makes specialization only in cases when you used SPECIALIZE/INLINE pragma and when function is small enough to be inlined. otherwise, each (+) operation will make a function call which is very slow thing in Haskell i propose you to use INLINE pragma: {-# INLINE foo #-} unless your function is recursive. in this case, you should use SPECIALIZE pragma: {-# SPECIALIZE foo :: Double -> Double -> Double #-} -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com