[Haskell] ANN: universe-0.1

wagnerdm at seas.upenn.edu wagnerdm at seas.upenn.edu
Wed Mar 20 20:54:14 CET 2013

Thanks to all for the very interesting feedback! Your suggestions have  
resulted in a second release of universe. New in this release:

* instances of Universe and Finite for function spaces
* some cheeky, optional instances of Eq, Ord, Show, and Read for  
functions with Finite domains
* support for (some) Representable functors
* ...but the downside is that this release now relies on TypeFamilies  
(let me know if this seems like a showstopper for you)

Enjoy, and keep the complaints coming!

Quoting wagnerdm at seas.upenn.edu:

> I've long heralded "data-default" as my favorite ten-line package...  
> before it was released, I found my self writing those a few lines in  
> each project to do just what's done there. Inspired by this, and the  
> fact that there's a separate ten lines that I find myself writing in  
> nearly every project, I'm pleased to announce the initial release of  
> "universe". The package sports just two load-bearing lines:
> class Universe a where universe :: [a]
> class Universe a => Finite a where universeF :: [a]
> ...along with a dozen or so instances of each. The instance do  
> nothing more than enumerating all the values of the given type.
> Hope you enjoy it, and let me know if you think there are some  
> important missing instances!
> http://hackage.haskell.org/package/universe
> https://github.com/dmwit/universe
> ~d
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