On Fri, Jun 1, 2012 at 6:29 AM, wren ng thornton <w...@freegeek.org> wrote: > > TypeFamilies (aka TFs) > These are really nifty and they're all the rage these days. In > a formal sense they're equivalent to fundeps, but in practice > they're weaker than fundeps.
Is that still true? The reason used to be that we didn't have superclass equalities, but we do have them now since 7.2. The only drawbacks I know of relative to FDs are that it's sometimes more typing, not supported by GeneralizedNewtypeDeriving, and doesn't allow OverlappingInstances (ick). _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
