We will replicate this behavior in the history stack we build.
我们将在自己创建的历史堆栈中再现这种行为。
The history stack object will need to be instantiated and loaded from cache.
需要实例化历史堆栈对象并从缓冲区加载它们。
In the testing application for the history stack, we only stored random Numbers as events.
在针对历史堆栈的测试应用程序中,只存储随机数作为事件。
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