RxJS ReplaySubject

2020-10-13 17:18 更新

主題的一種變體,可“重放”新的訂閱用戶或向新的訂閱用戶發(fā)出舊的值。它緩沖一定數(shù)量的值,除了向現(xiàn)有訂閱用戶發(fā)送新值外,還將立即將這些值發(fā)送給任何新訂閱用戶。

  1. class ReplaySubject<T> extends Subject {
  2. constructor(bufferSize: number = Number.POSITIVE_INFINITY, windowTime: number = Number.POSITIVE_INFINITY, scheduler?: SchedulerLike)
  3. _subscribe(subscriber: Subscriber<T>): Subscription
  4. _getNow(): number
  5. // inherited from index/Subject
  6. static create: Function
  7. constructor()
  8. observers: Observer<T>[]
  9. closed: false
  10. isStopped: false
  11. hasError: false
  12. thrownError: any
  13. lift<R>(operator: Operator<T, R>): Observable<R>
  14. next(value?: T)
  15. error(err: any)
  16. complete()
  17. unsubscribe()
  18. _trySubscribe(subscriber: Subscriber<T>): TeardownLogic
  19. _subscribe(subscriber: Subscriber<T>): Subscription
  20. asObservable(): Observable<T>
  21. // inherited from index/Observable
  22. static create: Function
  23. static if: typeof iif
  24. static throw: typeof throwError
  25. constructor(subscribe?: (this: Observable<T>, subscriber: Subscriber<T>) => TeardownLogic)
  26. _isScalar: boolean
  27. source: Observable<any>
  28. operator: Operator<any, T>
  29. lift<R>(operator: Operator<T, R>): Observable<R>
  30. subscribe(observerOrNext?: NextObserver<T> | ErrorObserver<T> | CompletionObserver<T> | ((value: T) => void), error?: (error: any) => void, complete?: () => void): Subscription
  31. _trySubscribe(sink: Subscriber<T>): TeardownLogic
  32. forEach(next: (value: T) => void, promiseCtor?: PromiseConstructorLike): Promise<void>
  33. pipe(...operations: OperatorFunction<any, any>[]): Observable<any>
  34. toPromise(promiseCtor?: PromiseConstructorLike): Promise<T>
  35. }

建設(shè)者

constructor(bufferSize: number = Number.POSITIVE_INFINITY, windowTime: number = Number.POSITIVE_INFINITY, scheduler?: SchedulerLike)

參量 類型
bufferSize 大小可選的。默認(rèn)值為Number.POSITIVE_INFINITY。類型:number。
windowTime 可選的。默認(rèn)值為Number.POSITIVE_INFINITY。類型:number
調(diào)度器 可選的。默認(rèn)值為undefined。類型:SchedulerLike

方法

訂閱() _subscribe(subscriber: Subscriber<T>): Subscription

參量 類型
subscriber 類型:。Subscriber

returnsSubscription

_getNow()
_getNow(): number參量沒有參數(shù)。returnsnumber
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