zip package:keys

zip :: Zip f => f a -> f b -> f (a, b)
keys Data.Key
class Functor f => Zip f
keys Data.Key
Laws: 
fmap fst (zip u u) = u
fmap snd (zip u u) = u
zip (fmap fst u) (fmap snd u) = u
zip (flip (,)) x y = zip y x
zipWith :: Zip f => (a -> b -> c) -> f a -> f b -> f c
keys Data.Key
zipWithKey :: ZipWithKey f => (Key f -> a -> b -> c) -> f a -> f b -> f c
keys Data.Key
class (Keyed f, Zip f) => ZipWithKey f
keys Data.Key