The Async Book (Rust)
The official MIT/Apache-2.0 Rust async guide — futures, executors, await semantics, pinning, streams, and combinators. Runnable Rust exercises drill each primitive (impl Future, join!, select!, stream adapters) with tokio + futures-rs.
- Rust
- 22 lessons
- ~4 hours
- Free
- by The Rust Project
Learn Rust for free on Libre Academy with the The Async Book (Rust) course: 22 interactive lessons you complete by writing real code in a built-in editor, graded instantly by hidden tests. No paywall, no sign-up — it runs in your browser and the free desktop app.
What you get
- Hands-on lessons with a real editor and instant, test-graded feedback.
- Free and open source — no account required to start.
- Runs in your browser, and offline in the free desktop app.
- Rust runs via a hosted playground.
What's inside
- Why Async?
- async / .await Syntax
- The Future Trait
- Pinning
- Streams
- Composing Multiple Futures
- Workarounds and Limitations