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[RxJS] Implement pause and resume feature correctly through RxJS

Eventually you will feel the need for pausing the observation of an Observable and resuming it later. In this lesson we will learn about use cases where pausing is possible, and what to do when pausing is impossible. const resume$ = new Rx.Subject();…

[RxJS] Implement the `map` Operator from Scratch in RxJS

While it's great to use the RxJS built-in operators, it's also important to realize you now have the knowledge to write them by yourself if needed. The mapoperator turns out to be a simple MapSubscriber which takes a function and applies it to the va…

quartz2.3.0（五）制定错过执行任务的misfire策略，用pause，resume模拟job暂停执行和继续执行

感谢兄台: <quartz-misfire 错失.补偿执行> misfire定义 misfire:被错过的执行任务策略 misfire重现——CronTrigger job任务类: package org.quartz.examples.example5; import org.quartz.DisallowConcurrentExecution; import org.quartz.Job; import org.quartz.JobDataMap; import org.quartz.Jo…

pause和resume

CCSet *m_pPausedTargets;类的成员变量 void CCNode::schedule(SEL_SCHEDULE selector, float interval, unsigned int repeat, float delay) void PauseResumeActions::onEnter() { ActionsDemo::onEnter(); ); m_tamara->runAction(CCRepeatForever::create(CCRotateBy::crea…

[RxJS] Implement RxJS `switchMap` by Canceling Inner Subscriptions as Values are Passed Through

switchMap is mergeMap that checks for an "inner" subscription. If the "inner" subscription exists, switchMap unsubscribes from that "inner" subscription which effectively "cancels" any pending pushes. import { fromE…

[RxJS] Implement RxJS `mergeMap` through inner Observables to Subscribe and Pass Values Through

Understanding sources and subscribers makes it much easier to understand what's going on with mergeMap under the hood. Where a typical operator invokes destination.next directly, mergeMap wraps destination.next inside of a new source/subscriber combo…

[RxJS] Implement RxJS `concatMap` by Waiting for Inner Subscriptions to Complete

Unlike mergeMap and switchMap, concatMap focuses on when "inner" subscriptions "complete" by using a "buffer". Each time concatMap receives a value, it adds each value to a "buffer", waits for previous "inner&q…

[RxJS] Aggregating Streams With Reduce And Scan using RxJS

What is the RxJS equivalent of Array reduce? What if I want to emit my reduced or aggregated value at each event? This brief tutorial covers Observable operators reduce() and scan(), their differences and gotchas. In ES5, the Array's reduce function…

[RxJS] Toggle A Stream On And Off With RxJS

This lesson covers how to toggle an observable on and off from another observable by showing how to use a checkbox as a toggle for a stream of data. <!DOCTYPE html> <html> <head> <script src="https://npmcdn.com/@reactivex/rxjs@5.…

[RxJS] Reactive Programming - Clear data while loading with RxJS startWith()

In currently implemention, there is one problem, when the page load and click refresh button, the user list is not immediatly clean up,it is cleared after the new data come in. So two things we need to do, 1. Hide User Elements when the user object i…