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使用 Kotlin data class 遇到的一个坑!
今天文章比较短,不过足够说明遇到的坑了。 Kotlin 的 data class 自动覆写了equals 和hashCode 两个方法。虽然有些时候可以给用户带来便利,但是如果使用不慎就会出现一些匪夷所思的问题,比如这里遇到的一个问题是,将一个对象作为键放到 Map (或者 Set)之后 ...
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