Swift Concurrency cheat sheet: A Dive into Async/Await, Actors, and More

Swift has been evolving rapidly, and with the recent updates, concurrency has taken a massive leap forward. Apple has introduced several new concurrency features aimed at making it easier for developers to write asynchronous code that’s both safe and efficient. However, many of these new tools are still unfamiliar to some developers.

It is all new

If you haven’t had the time to explore these features yet or been busy with ongoing projects, this article is here to guide you through the essential Swift Concurrency concepts. We’ll dive into each feature in detail, with examples to help you understand how to use them.

We’ll delve deep into Swift’s concurrency model, covering:

1. async/await
2. async let
3. Task
4. TaskGroup
5. Actors/MainActor
6. Sendable
7. Continuations
8. AsynSequence
9. AsyncStream