I want my observable to fire immediately, and again every second. interval will not fire immediately. I found this question which suggested using startWith
, whi
Before RxJs 6:
Observable.timer(0, 1000)
will start immediately.
RxJs 6+
import {timer} from 'rxjs/observable/timer';
timer(0, 1000).subscribe(() => { ... });
With RxJava2, there's no issue with duplicated first entry and this code is working fine:
io.reactivex.Observable.interval(1, TimeUnit.SECONDS)
.startWith(0L)
.subscribe(aLong -> {
Log.d(TAG, "test"); // do whatever you want
});
Note you need to pass Long
in startWith, so 0L
.
RxJs 6
interval(100).pipe(startWith(0)).subscribe(() => { //your code });
or with timer:
import {timer} from 'rxjs/observable/timer';
timer(0, 100).subscribe(() => {
});