It may look a dumb question (sorry if it is), but usually, in my apps, I have this rootVC to inherit with others VCs. So came to me that I have multiples instances of this root. For example, in It may look a dumb question (sorry if it is), b
阅读背景：
创建一个RootViewController以继承所有其他VC是一个好习惯吗？
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