Web Reference: interval returns an Observable that emits an infinite sequence of ascending integers, with a constant interval of time of your choosing between those emissions. The first emission is not sent immediately, but only after the first period has passed. I want my observable to fire immediately, and again every second. interval will not fire immediately. I found this question which suggested using startWith, which DOES fire immediately, but I then get a duplicate first entry. Learn RxJS Operators Creation interval signature: interval(period: number, scheduler: Scheduler): Observable Emit numbers in sequence based on provided timeframe. Examples
YouTube Excerpt: RxJava series will help us to understand Reactive Programming
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