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。
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。
Our history stack object will only exist as long as the user is on the photo gallery page.
只要用户仍在查看相册页面,历史堆栈对象就会一直存在。
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