Angular 5，可观察和异步功能 [英] Angular 5, Observable and async function

问题描述

我一直在尝试创建类似于http.get(...)的函数，但是不执行任何http.基本上我要做的就是定义一个函数

I have been trying to create a function that is similar to http.get(...) but not doing any http. Basically what I have done is that I defined a function

async myFunc(): Observable<string> {
 var myObservable: Observable<string>;

  //.....
  // the rest of the function's code comes here
  // ...

 return myObservable;
}

但是我总是收到一个错误消息，它与ES5/ES3不兼容，应该返回Promise对象?但是我想知道Angular 5的http.get函数如何成为可能?显然它返回一个Observable.

But I always get an error that it is not compatible with ES5/ES3 and should return a Promise object? But I am wondering how it became possible with Angular 5's http.get function? Where clearly it returns an Observable.

谢谢，
阿塔尼斯(Artanis)

Thanks,
Artanis

推荐答案

async/await功能可与promises一起使用.您可以使用 Observable.defer 定义具有async/await功能的Observable.

The async/await functionality works with promises. You can use Observable.defer to define an Observable with async/await functionality.

有关更多信息，请参见此帖子: https://medium.com/@benlesh/rxjs-observable-interop-with-promises-and-async-await-bebb05306875

See this post for more information: https://medium.com/@benlesh/rxjs-observable-interop-with-promises-and-async-await-bebb05306875

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