Most object - oriented programming systems provide polymorphism through inheritance 大部分面向對象的編程系統都通過繼承提供多態性。
In electrical engineering , the difficulty of one system to handle inputs from another system is called an impedance mismatch , a term often applied to the difficulty of connecting object - oriented programming systems to stored data 在電子工程學中,當一個系統從另一個系統獲取輸入時出現的問題被稱為阻抗失配,這個問題也經常出現在關聯面向對象系統和數據存儲的時候。