工作日常记录 2017-09-21

---

等待联调，没什么重要的任务。继续看各种文档

1. RxJS的zip和昨天描述的merge类似，是对多个Observable进行合并的操作。不过不同点在于， zip是把内部绑定的多个Observable进行同步，当内部多个Observable都返回了结果的时候，把各个Obseravable的返回结果合成一个结果打到zip生成的Observable主线上面，例子如下：

import Rx from 'rxjs';import Events from 'events';// Default two Observable created by timerconst timer1 = Rx.Observable.timer(0, 8000).mapTo({ value: 'value from timer1' });const timer2 = Rx.Observable.timer(0, 10000).mapTo({ value: 'value from timer2' });// Input trigger valueconst inputE = new Events.EventEmitter();process.stdin.addListener(    'data', value => inputE.emit('input',`${input}`));const input = Rx.Observable.fromEvent(inputE, 'input');// Create a Observable that zip all the Observable aboveconst zipppedObservable = Rx.Observable.zip(    timer1, timer2, input).subscribe(    param =>(console.log(        `result:${JSON.stringify(param)}`    )));// In console, when you run the entire project// Nothing will happen, after 10 second, you enterthis is a test \n// Output will be result:[{ value: 'value from timer1' }, { value: 'value from timer2' }, 'this is a test']