RxSwift - Reactive Programming with Swift by By Marin Todorov & By Scott Gardner & By Florent Pillet & By Junior Bontognali

Author:By Marin Todorov & By Scott Gardner & By Florent Pillet & By Junior Bontognali
Language: eng
Format: epub
Publisher: Ray Wenderlich

In the settings you used, replayedElements is equal to 1. It configures the replay(_:) operator to only buffer the last element from the source observable. The animated timeline shows that the second subscriber receives elements 3 and 4 in the same time frame. By the time it subscribes, it gets both the latest buffer element (3) and the one that happens to be emitted just right when subscription occurs. The timeline view shows them stacked up since the time they arrive is about the same (although not exactly the same).

Note: You can now play with the replayDelay and replayedElements constants. Observe the effect of tweaking the number of replayed (buffered) elements. You can also tweak the total number of elements emitted by the source observable using maxElements. Set it to a very large value for continuous emission.

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