Re: Optimizing "counting" GADTs

Scratch that. I think you might be right. On May 25, 2016 8:40 PM, "David Feuer" wrote:

Partially. Unfortunately, bidirectional pattern synonyms tie the types of the pattern synonyms to the types of the smart constructors for no good reason, making them (currently) inappropriate. But fixing that problem would offer one way to this optimization, I think. On May 25, 2016 8:37 PM, "Carter Schonwald" wrote:

could this be simulated/modeled with pattern synonyms?

On Wed, May 25, 2016 at 7:51 PM, David Feuer wrote:

...

I've started a wiki page, https://ghc.haskell.org/trac/ghc/wiki/OptimizeCountingGADTs , to consider optimizing GADTs that look like natural numbers but that possibly have "heavy zeros". Please take a look.

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