What's the difference between async and async* in Dart?

Technology Community › Category: Flutter › What’s the difference between async and async* in Dart?

VietMX Staff asked 3 years ago

async gives you a Future while async* gives you a Stream
You add the async keyword to a function that does some work that might take a long time. It returns the result wrapped in a Future.
You add the async* keyword to make a function that returns a bunch of future values one at a time. The results are wrapped in a Stream.
async* will always returns a Stream and offer some syntax sugar to emit a value through yield keyword.

Question Tags: Flutter, Senior Level