diff --git a/src/Data/Bifunctor/Join.hs b/src/Data/Bifunctor/Join.hs index 4b9a9f7f4..a6ca83422 100644 --- a/src/Data/Bifunctor/Join.hs +++ b/src/Data/Bifunctor/Join.hs @@ -20,6 +20,3 @@ instance Applicative (Join These) where instance Foldable (Join These) where foldMap f = these id id mappend . bimap f f . runJoin - -instance Traversable (Join These) where - sequenceA = these (fmap (Join . This)) (fmap (Join . That)) (\ a b -> (Join .) . These <$> a <*> b) . runJoin