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【Rxjs三】Subject #46

@xinbaihui

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@xinbaihui
  • Subject, BehaviorSubject, ReplaySubject, AsyncSubject 实现原理:https://juejin.cn/post/6985348097064828942#heading-8
  • Subject的构造函数没有参数,不会立刻执行onSubscribe(产生数据并传给subscriber), 而是订阅某个Observable或者自己产生数据,统一传递给subscriber,因此能实现组播(数据源只有一个)

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