怕什么，抱紧我
2020-02-06
感觉valueOf（“”）有点鸡肋,枚举就是用来分类的！直接用这个方法获取实例,有点硬编码的味道！~
作者回复: 在某些偏框架的代码可能会用到。具体的合理的场景构造起来比较费劲
破晓丶影夜
2019-07-12
老师，从这节开始，感觉你的声音突然变空旷了，感觉好不习惯。。。
作者回复: 和录制的环境有关，哈哈
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