ConnectableObservable has the connect() method to conveniently dictate the start of the shared execution of the source Observable. However, we need a mechanism to dictate the stop of the shared execution, otherwise a leak happens. This lesson will teach you how to do that, and it's all about Subscriptions.

var connectableObservable = Rx.Observable.interval(1000)
.do(x => console.log('source ' + x))
.multicast(new Rx.Subject()); var observerA = {
next: function (x) { console.log('A next ' + x); },
error: function (err) { console.log('A error ' + err); },
complete: function () { console.log('A done'); },
}; var sub = connectableObservable.connect(); // start var subA = connectableObservable.subscribe(observerA); var observerB = {
next: function (x) { console.log('B next ' + x); },
error: function (err) { console.log('B error ' + err); },
complete: function () { console.log('B done'); },
}; var subB;
setTimeout(function () {
subB = connectableObservable.subscribe(observerB);
}, 2000); setTimeout(function () {
sub.unsubscribe(); // stop
console.log('unsubscribed shared execution');
}, 5000);

Just remember that with connect we are manually controlling the start of the shared execution, and then we keep a subscription in order to manually control the stop of the shared execution. All of this is in order to avoid leaks.

[RxJS] Stopping a shared observable execution的更多相关文章

  1. [RxJS] Stopping a Stream with TakeUntil

    Observables often need to be stopped before they are completed. This lesson shows how to use takeUnt ...

  2. RxJS库

    介绍 RxJS是一个异步编程的库,同时它通过observable序列来实现基于事件的编程.它提供了一个核心的类型:Observable,几个辅助类型(Observer,Schedulers,Subje ...

  3. Angular快速学习笔记(4) -- Observable与RxJS

    介绍RxJS前,先介绍Observable 可观察对象(Observable) 可观察对象支持在应用中的发布者和订阅者之间传递消息. 可观察对象可以发送多个任意类型的值 -- 字面量.消息.事件. 基 ...

  4. [RxJS] Subject: an Observable and Observer hybrid

    This lesson teaches you how a Subject is simply a hybrid of Observable and Observer which can act as ...

  5. RxJS——可观察的对象(Observable)

    可观察的(Observable) 可观察集合(Observables)是多值懒推送集合.它们填补了下面表格的空白: SINGLE MULTIPLE Pull Function Iterator Pus ...

  6. rxjs——subject和Observable的区别

    原创文章,转载请注明出处 理解 observable的每个订阅者之间,是独立的,完整的享受observable流动下来的数据的. subject的订阅者之间,是共享一个留下来的数据的 举例 这里的cl ...

  7. [RxJS] Reusable multicasting with Subject factories

    The way we use publish() (or multicast with an RxJS Subject) makes the shared Observable not reusabl ...

  8. RxJS v6 学习指南

    为什么要使用 RxJS RxJS 是一套处理异步编程的 API,那么我将从异步讲起. 前端编程中的异步有:事件(event).AJAX.动画(animation).定时器(timer). 异步常见的问 ...

  9. [RxJS] Multicast with a selector argument, as a sandbox

    Let's explore a different use of the multicast() operator in RxJS, where you can provide a selector ...

随机推荐

  1. Vue项目自动转换 px 为 rem,高保真还原设计图

    技术栈 vue-cli:使用脚手架工具创建项目. postcss-pxtorem:转换px为rem的插件. 自动设置根节点html的font-size 因为rem单位是相对于根节点的字体大小的,所以通 ...

  2. IIS7下设置AD单点登录

    简介:IIS7下设置AD单点登录 1.选中网站,双击“身份验证”: 2.启用“Window身份验证”.禁用“匿名身份验证”.启用“基本身份验证”: 3.在“基本身份验证”上面点右键,选择“编辑”,输入 ...

  3. 通过 chroot 重新设置 root 密码

    实例:通过 chroot 重新设置 root 密码 忘记了 root 密码该怎么办?接下来的 demo 将演示如何通过 chroot 命令重新设置 centos7 中被忘记了的 root 密码.sys ...

  4. 今日SGU 5.12

    SGU 149 题意:求每一个点的距离最远距离的点的长度 收获:次大值和最大值,dfs #include<bits/stdc++.h> #define de(x) cout<< ...

  5. Myeclipse学习总结(3)——Myeclipse中的代码格式化、注释模板及保存时自动格式化

    设置Myeclipse中的代码格式化.注释模板及保存时自动格式化 1:设置注释的模板: 下载此模板:  codetemplates.xml This XML file does not appear ...

  6. Oracle 11gR2光钎链路切换crs服务发生crash

    Oracle 11gR2光钎链路切换crs服务发生crash 背景: 我们将Oracle 11gR2(11.2.0.4)在RedHat EnterPrise 5.8上通过RDAC完毕的多路径链路冗余. ...

  7. Android记录16-友盟第三方登录、分享实现

    Android开发记录16-友盟第三方登录.分享实现 2014年博客之星,投票地址username=wwj_748#content" style="font-family: Kai ...

  8. 终结者:借助pinyin4j相关jar包提取汉字的首字母

    import net.sourceforge.pinyin4j.PinyinHelper; import net.sourceforge.pinyin4j.format.HanyuPinyinCase ...

  9. 如何应对DDOS网络攻击

      650) this.width=650;" border="0" alt="" src="http://img1.51cto.com/a ...

  10. C#监控代码运行的时间

    System.Diagnostics.Stopwatch watch = new System.Diagnostics.Stopwatch(); watch.Start(); //开始监视代码运行时间 ...