timer function

Observable<int> timer (
  1. {Duration delay: Duration.zero,
  2. Duration period,
  3. Scheduler scheduler}
)

An Observable that starts emitting after delay and that emits an ever increasing numbers after each period thereafter.

Implementation

Observable<int> timer(
    {Duration delay = Duration.zero, Duration period, Scheduler scheduler}) {
  ArgumentError.checkNotNull(delay, 'delay');
  return TimerObservable(delay, period, scheduler ?? defaultScheduler);
}