摘要: 1. The three principles of OOP are encapsulation(封装性), inheritance(继承性) and polymorphism(多态性). example: A subtype is guaranteed to have all the member 阅读全文
posted @ 2016-11-26 12:43 mengrennwpu 阅读(252) 评论(0) 推荐(0) 编辑