与上次不同时发出的 RxJava 运算符 [英] RxJava operator that emits if different from last

问题描述

如果要发射的项目不等于最后发射的项目，是否有一个运算符会发射项目?

解决方案

有

Is there an operator that emits items if the item to be emitted is not equal the last emitted item?

解决方案

There is distinctUntilChanged().

RxJava also implements the distinctUntilChanged operator. It only compares emitted items from the source Observable against their immediate predecessors in order to determine whether or not they are distinct.

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