Kotlin Tutorial #19: Flow — Reactive Streams in Kotlin
In the previous tutorial, you learned about advanced coroutine topics. Now let’s learn about Flow. Flow is Kotlin’s way of working with reactive streams. It lets you emit multiple values over time, with full support for coroutines. In this tutorial, you will learn: What is Flow Flow builder and emit/collect Operators: map, filter, take, transform Terminal operators: toList, first, reduce, fold flowOn for changing dispatchers combine and zip Error handling with catch and retry onCompletion and onEach conflate and distinctUntilChanged flatMapConcat, flatMapMerge, flatMapLatest StateFlow and SharedFlow (hot flows) stateIn and shareIn Practical examples What is Flow? Flow is a cold, asynchronous stream that emits values one at a time. ...