Rx how to take first n elements of a sequence within time interval and ignore others

问题

I'm using Rx in my programm and want to create subscription for observable that takes 5 first elements within one minute time interval and ignores others. For example,

Sequence: -1---2--3--4-5---6---7-8--------------
Interval: |------------------|------------------|
Result:   |1---2--3--4-5-----|-7-8--------------|

Any thoughts? Thanks in advance

回答1:

Window + SelectMany + Take would work in this case:

var subscription = source.Window(TimeSpan.FromMinutes(1))
      .SelectMany(w => w.Take(5))
      .Subscribe(item => Console.WriteLine(item));

来源：https://stackoverflow.com/questions/31125466/rx-how-to-take-first-n-elements-of-a-sequence-within-time-interval-and-ignore-ot