This is why we have to make sure our modules follow Open Closed Principle.

这是为什么我们需要确保我们的模块遵从开发关闭原则。

youdao

So, did this solution conform to the Open Closed Principle?

那么，这个解决方案遵守了开闭原则么？

youdao

If a class that uses an abstraction has to downcast to a specific subclass in one section, you're not following the Open Closed Principle.

如果在某一部分中，一个抽象了的类必须向下转换为特定的子类，那么你就没有遵循开闭原则。

youdao

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VOA: standard.2010.01.10

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