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。

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.

youdao

由于这个原则，你几乎没有任何限制去达到想要达到的目标。

With it there are almost no limits to what you can achieve.

youdao

也许你现在在想，我有没有遵循这些原则，并且在大多数情况下，我的回答是什么呢？

Now you might be wondering if I follow all these guidelines myself, and the answer is most of the time.

youdao