Question

[ This question is regarding IObservable / Rx ]

Working Fixed Delay

var frequency = TimeSpan.FromMinutes(5);
Result.Delay(frequency).Subscribe(i => Debug.WriteLine("After Fixed Delay"));

Pseudo-Code for Variable Delay

Result.Delay(GetAsymptotingTime()).Subscribe(i => Debug.WriteLine("After Changing Delay"));

While the code for variable delay compiles it gets called only once, providing only the first value (essentially a fixed value).

• How could you subscribe with a dynamic delay in Reactive Extensions?

Answer 1

I think this works:

source
  .SelectMany(i => Observable.Timer(GetAsymptotingTime()).Select(_=>i))

If your delays are decreasing, the resulting stream may be in a different order to the original stream.