前面已经简单地介绍了单例模式的实现方式，现在让我们进入主题：两个单例对象如何同时存在？

Now that we've looked briefly at implementation, let's turn to the heart of this article: how two singletons can exist simultaneously.

youdao

前面已经简单地介绍了单例模式的实现方式，现在让我们进入主题：两个单例对象如何同时存在？

Now that we've looked briefly at implementation, let's turn to the heart of this article: how two singletons can exist simultaneously.

youdao