+1 Seems obvious. People shouldn't have to define orphan instances for
these. Any instance (of a class in base) that makes sense should be
included whenever possible.
-- Dan Burton
On Thu, Dec 11, 2014 at 7:30 AM, Sean Leather
As of base 4.7.0.1, none of the newtype wrappers in Data.Monoid have instances for:
- Typeable - Data - Functor
It looks like the base library repository has AutoDeriveTypeable, so I presume that takes care of the Typeable instances. It also looks like First and Last now have Functor instances, amongst others.
In particular, I would like to add Functor instances for all parameterized types, where applicable (i.e. Dual, Sum, Product).
In general, I think we should add whatever other instances make sense. Data came to mind. Others?
Discussion period: 2 weeks (or perhaps until after the beginning of the new year)
Regards, Sean
_______________________________________________ Libraries mailing list Libraries@haskell.org http://www.haskell.org/mailman/listinfo/libraries