App里边不会有相同的两个Activity吧，为啥还要用HashSet 去重呢？ #142

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on May 30, 2019

App里边的HashSet里边是不会有相同的两个Activity吧？如果没有的话，拿个list不就可以吗？要是有的话，为啥不重写equals 和hashcode呢？

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