Modern Swift Concurrency Bootcamp

Modern Swift concurrency gives iOS apps a safer way to perform asynchronous work. This section covers async/await, tasks, task groups, continuations, actors, Sendable, MainActor, AsyncPublisher, AsyncStream, and SwiftUI features that depend on async code.

These pages are original Swift Rivals study notes for iOS developers. Each lesson includes a focused explanation, a Swift example, common mistakes, and practice ideas.

How To Study This Section

1. Start with the lesson overview and key takeaways.
2. Read the Swift Rivals explanation to reinforce the concept.
3. Type the example by hand instead of copying it.
4. Complete at least one practice idea before moving on.

References

• Foundational concurrency guides on Swift Rivals

Lessons

• 0. Learn Swift Concurrency (Async, Await, Actors)
• 1. How to use Do, Try, Catch, and Throws in Swift
• 2. Download images with Async/Await, @escaping, and Combine
• 3. How to use async / await keywords in Swift
• 4. How to use Task and .task in Swift
• 5. How to use Async Let to perform concurrent methods in Swift
• 6. How to use TaskGroup to perform concurrent Tasks in Swift
• 7. How to use Continuations in Swift (withCheckedThrowingContinuation)
• 8. Swift: Struct vs Class vs Actor, Value vs Reference Types, Stack vs Heap
• 9. How to use Actors and non-isolated in Swift
• 10. How to use Global Actors in Swift (@globalActor)
• 11. What is the Sendable protocol in Swift?
• 12. How to use AsyncPublisher to convert @Published to Async / Await
• 13. How to manage strong & weak references with Async Await
• 14. How to use MVVM with Async Await
• 15. How to use Refreshable modifier in SwiftUI
• 16. How to use Searchable, Search Suggestions, Search Scopes in SwiftUI
• 17. How to use PhotosPicker in SwiftUI & PhotosUI
• 18. How to use AsyncStream in Swift
• 19. How to use MainActor with Observable Macro in SwiftUI

Last updated: June 27, 2026