By adding a wrapper class, you have broken subtype polymorphism.
通过添加包装程序类，您打破了子类型的多态性。
Anyway, this section talks about UML and class diagrams, inheritance, polymorphism, encapsulation... things they should have shown you in the beginning.
总之，该部分讨论了UML和类图、继承、多态性、封装…一些应该在开头为您介绍的东西。
As I said earlier, the most common manifestation of the Open Closed Principle is using polymorphism to substitute an existing part of the application with a brand new class.
如果我前面所说的，使用开闭原则最通常的做法就是使用多态去用一个全新的类替换程序中现存的一部分。
This allows you to swap out at runtime a different class exposing the same methods, taking advantage of polymorphism.
它允许利用多态性在运行时换出一个不同的类来公开相同的方法。
Another reason is that by passing a DictionaryIO object to Dictionary, you can take advantage of class switching, or polymorphism.
另一个原因是通过将DictionaryIO对象传递给Dictionary，可以利用类切换或多态性。
Table per Concrete Class using Implicit polymorphism.
4使用隐式多态实现每个具体类一张表。
A mechanism for treating different implementations as logically "the same kind of thing" - usually polymorphism is implemented via interface implementation and class inheritance.
l一种逻辑上做相同事情，但却有不同实现的机制。我们通常称之为多态机制。
Using the encapsulation, inheritance and polymorphism of OOP, a foundation class library of small satellite software is designed, the detail design of all base classes is introduced.
利用OOP的封装性、继承性和多态性，设计小卫星软件的基本类库，介绍各个基本类的具体设计思想。
"Table per Concrete Class using implicit Polymorphism" is not recommended due to its verbose configurations, complex association syntax using "any" element and potentially dangerous implicit queries.
“使用隐式多态实现每个具体类一张表”这种做法并不推荐，因为其配置过于繁缛、使用“any”元素的复杂关联语法和隐式查询的潜在危险性。
All you need to do is upcast from the derived class and never look back to see what exact type of object you're dealing with. Everything is handled through polymorphism.
你只需要将对象上传转化为基类对象不需要知道额外的信息，而这些都是通过多态实现的。
Since all objects in the class pool are upcast to their common base class, the polymorphism of the method leads to that which object method will be executed can only be ascertained at runtime.
由于所有位于对象池中的对象都被上溯到它们的基类型，方法多态使得只有在运行时刻才能真正确定到底哪个对象的方法被执行。
Since all objects in the class pool are upcast to their common base class, the polymorphism of the method leads to that which object method will be executed can only be ascertained at runtime.
由于所有位于对象池中的对象都被上溯到它们的基类型，方法多态使得只有在运行时刻才能真正确定到底哪个对象的方法被执行。
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