刚才问了个由于自己太粗心的问题，现在修改问题和记录一下，提醒自己

Question

class打成clas，欲哭无泪。。。

敲代码得认真

Answer 1

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

Answer 2

小失误，正常的很！

Answer 3

我找到问题了，class写错了，唉，欲哭无泪。。。