Daniel Fischer schrieb: > Am Donnerstag 19 November 2009 01:07:37 schrieb Henning Thielemann: > >> Seems to be that the author defined an orphan instance - something one >> should never do! > > So what do you do if you need an instance ClassX TypeY but the author of the > package that > defines TypeY hasn't provided one?
The author (me) has added the instance after it became aware to him (me) ... > You can define an orphan instance or duplicate packageY but with the > instance. Both are > bad. Providing an orphan instance until packageY has one seems the lesser > evil to me. > Are there any good options? A separate package for that orphan instance would be the best solution. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
