[Haskell-cafe] Re: Comparing GADTs for Eq and Ord

Ashley Yakeley ashley at semantic.org
Mon Sep 15 22:09:13 EDT 2008

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"

Ashley Yakeley

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