OOP consists of five aspects: object, message, method, class and inheritance.

OOP技术由对象、消息、方法、类和继承五个方面组成。

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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。

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Inheritance allows you to reuse and customize existing code inside a new class.

继承允许您在新的类中重用和自定义现有的代码。

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Both seem to imply that the colonial inheritance of an independent class of public servants who could detach themselves from their ethnic or religious roots and serve the nation offered Africa its best chance of developing.

ECONOMIST: Books on Africa