supporting absoluteTime, selector for delay() operator?

[kwonoj]

Current implementation of delay operator supports only relative time delay as stated in signature

delay(delay: number, scheduler: Scheduler)

compare to RxJS4, which supports absoluteTime also delayDurationSelector.

would like to ask if it's planned to expand current implementation to support rest of behaviors.

Personally, since it has somewhat polymorphic behavior would like to separate surface such as below (course function name could be different)

delay(delay: number | Date, scheduler: Scheduler)
delayWhen(delayDurationSelector: function, subscriptionDelay:Observable)

[kwonoj]

Would like to take this one if this reaches agreement, since I'm working on expanding marble test for this operator.

[benlesh]

That seems reasonable. I'm on mobile, does delayWhen align with bufferWhen? If so, it sounds good to me

[kwonoj]

somewhat similar, but not exactly. Major difference is bufferWhen accepts observable directly as closing selector, while above delayWhen simply mimic RxJS4 signature to accept function as selector. If it's to be aligned, signature will be looks like

delayWhen(delayDurationSelector: Observable, subscriptionDelay?:Observable)

not sure if selector observable can get rid of subscriptionDelay completely.

[luisgabriel]

Observable.timer() in RxJS 4 also accepts absolute time: https://github.com/Reactive-Extensions/RxJS/blob/master/doc/api/core/operators/timer.md

Should we add this behavior to RxJS Next?

[benlesh]

Should we add this behavior to RxJS Next?

@luisgabriel yes we should... closing this issue though because it's done. I'll open another.