And now the point just to tease apart, I can't erase that, let's fix, so now the one detail that's worth pointing out is * that this here the * in swap's prototype and the * here in swap's prototype do not mean go there.

现在我们要梳理一下，我不能清除那个，让我们修正一些，需要指出的一个细节是,在swap原型中的,意思不是定位到那个地方。

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