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Coroutines · medium

25. Kotlin Flow Basics

Asynchronous data streams.

1 min read2 questionsup to 50 XPtopic 25/50

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AI translates the explanation and quiz text while preserving code and answer scoring.

Flow is a cold stream that emits values sequentially and completes normally or with an exception.

How to study this topic

  1. 1. Read the explanation once end to end, skipping the code.
  2. 2. Re-read the code snippets and say out loud what each line does.
  3. 3. Answer the quiz without scrolling back — that is the real check.
  4. 4. Read every explanation, even for the answers you got right.

Scoring

  • · Up to 30 XP from quiz accuracy.
  • · +15 XP for a perfect first attempt.
  • · +5 XP while a 3-day streak is running.
  • · 75% or higher marks the topic complete.

Check your understanding

  1. 1. How to emit a value?

  2. 2. Is Flow hot or cold?

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