Actually, I looked at the SORF page again: http://hackage.haskell.org/trac/ghc/wiki/Records/OverloadedRecordFields There is now an 'Alternative Proposal' section that claims to solve polymorphic update. If anyone has comments on this please let us know!
So my proposal would be to somehow use the SORF Alternative Proposal to allow for name-spaced records. This should be used to generate internal constraints and not be exposed to the end user and not automatically abstract over fields. This leaves all of our future options open while satisfying the narrow issue at hand. On Fri, Feb 24, 2012 at 9:27 AM, Greg Weber <g...@gregweber.info> wrote: > I looked at the DORF implementers view > http://hackage.haskell.org/trac/ghc/wiki/Records/DeclaredOverloadedRecordFields/ImplementorsView > > It appears that we still have no solution for record updates that > change the type of a polymorphic field. > I think this means we need to look to ways to solve this update issue > other than just de-sugaring to typeclasses. > _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
