eitherMaybe'' :: (b -> c) -> Either a b -> Maybe c
eitherMaybe'' f = either' (const Nothing) (Just . f)
eitherMaybe'' :: (b -> c) -> Either a b -> Maybe c
eitherMaybe'' f = either' (const Nothing) (Just . f)
eitherMaybe'' f = either' (const Nothing) (Just . f)