Opal-Estate-Pro/node_modules/rxjs/_esm2015/scheduler/async.js
2019-09-13 11:27:52 +07:00

46 lines
1.4 KiB
JavaScript
Executable File

import { AsyncAction } from './AsyncAction';
import { AsyncScheduler } from './AsyncScheduler';
/**
*
* Async Scheduler
*
* <span class="informal">Schedule task as if you used setTimeout(task, duration)</span>
*
* `async` scheduler schedules tasks asynchronously, by putting them on the JavaScript
* event loop queue. It is best used to delay tasks in time or to schedule tasks repeating
* in intervals.
*
* If you just want to "defer" task, that is to perform it right after currently
* executing synchronous code ends (commonly achieved by `setTimeout(deferredTask, 0)`),
* better choice will be the {@link asap} scheduler.
*
* @example <caption>Use async scheduler to delay task</caption>
* const task = () => console.log('it works!');
*
* Rx.Scheduler.async.schedule(task, 2000);
*
* // After 2 seconds logs:
* // "it works!"
*
*
* @example <caption>Use async scheduler to repeat task in intervals</caption>
* function task(state) {
* console.log(state);
* this.schedule(state + 1, 1000); // `this` references currently executing Action,
* // which we reschedule with new state and delay
* }
*
* Rx.Scheduler.async.schedule(task, 3000, 0);
*
* // Logs:
* // 0 after 3s
* // 1 after 4s
* // 2 after 5s
* // 3 after 6s
*
* @static true
* @name async
* @owner Scheduler
*/
export const async = new AsyncScheduler(AsyncAction);
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