At 2002-01-15 00:00, Ketil's local user wrote: >When recently reading the GHC docs, the chapter about profiling, I >think, I came across something about this. From Chapter 6: > >| Newtypes are better than datatypes: >| >| If your datatype has a single constructor with a single field, >| use a newtype declaration instead of a data declaration. The newtype >| will be optimised away in most cases
Does that help? data (,) a b = (,) a b; newtype Pair v w a = P (v a, w a); vs. data Pair v w a = P (v a) (w a); and data () = (); newtype Empty a = E (); vs. data Empty a = E; -- Ashley Yakeley, Seattle WA _______________________________________________ Haskell-Cafe mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/haskell-cafe
