Ryan Ingram wrote:
There are many papers that talk about using GADTs to reify types in this fashion to allow safe typecasting. They generally all rely on the "base" GADT, "TEq"; every other GADT can be defined in terms of TEq and existential types.
Ah, yes. See my paper "Witnesses and Open Witnesses" <http://semantic.org/stuff/Open-Witnesses.pdf> -- Ashley Yakeley _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
