
`any?` is not the opposite of `empty?`. Besides the case that `[false, nil].any?` will return false, `any?`(O(n)) has much worse performance than `empty?`(O(1)).
`any?` is not the opposite of `empty?`. Besides the case that `[false, nil].any?` will return false, `any?`(O(n)) has much worse performance than `empty?`(O(1)).