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| data Vec3 a = Vec3 a a a deriving (Eq, Show) | |
| instance Functor Vec3 where | |
| fmap f (Vec3 a b c) = Vec3 (f a) (f b) (f c) | |
| instance Applicative Vec3 where | |
| pure a = Vec3 a a a | |
| (Vec3 f f' f'') <*> (Vec3 a b c) = Vec3 (f a) (f' b) (f'' c) | |
| instance Foldable Vec3 where | |
| foldr :: (a -> b -> b) -> b -> Vec3 a -> b | |
| foldr f d (Vec3 a b c) = f a (f b (f c d)) | |
| instance Traversable Vec3 where | |
| traverse :: Applicative f => (a -> f b) -> Vec3 a -> f (Vec3 b) | |
| traverse f (Vec3 a b c) = Vec3 <$> f a <*> f b <*> f c | |
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