startasync.md

Rx.Observable.startAsync(functionAsync)

Ⓢ

Invokes the asynchronous function, surfacing the result through an observable sequence.

Arguments

1. functionAsync (Function): Asynchronous function which returns a Promise to run.

Returns

(Observable): An observable sequence exposing the function's Promises's value or error.

Example

var source = Rx.Observable.startAsync(function () {
    return RSVP.Promise.resolve(42);
});

var subscription = source.subscribe(
    function (x) {
        console.log('Next: ' + x);
    },
    function (err) {
        console.log('Error: ' + err);
    },
    function () {
        console.log('Completed');
    });

// => Next: 42
// => Completed

Location

File:

• /src/core/linq/observable/startasync.js

Dist:

• rx.async.js
• rx.async.compat.js
• rx.lite.js
• rx.lite.compat.js

Prerequisites:

• If using rx.async.js | rx.async.compat.js
  • rx.js | rx.compat.js
  • rx.binding.js

NPM Packages:

• rx

NuGet Packages:

• RxJS-Async
• RxJS-Lite

Unit Tests:

• /tests/observable/startasync.js