Talk:GHC/Type families
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In 4.3.2 Examples
module GMap (GMapKey(..), GMap(..)) where...: As before, but also exports all the data constructors GMapInt, GMapChar, GMapUnit, GMapPair, and GMapUnit.
should probably be:
module GMap (GMapKey(..), GMap(..)) where...: As before, but also exports all the data constructors GMapInt, GMapChar, GMapUnit, GMapPair, and GMapEither.
Paragraph 6 is a copy of Paragraph 4 except Collects is used.