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Define a GSum instance for M1.

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Rob Rix 2019-09-23 18:00:46 -04:00
parent b7a93aed3d
commit 30dad2da72
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semantic-tags/src/Tags/Taggable/Precise.hs
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@ -183,3 +183,7 @@ instance {-# OVERLAPPABLE #-}
class GSum t where
type Members t :: (* -> *)
gmembers :: t a -> Members t a
instance GSum f => GSum (M1 i c f) where
type Members (M1 i c f) = Members f
gmembers = gmembers . unM1