Join us online for a live deep dive into Swift concurrency with Apple engineers. Ask questions, gain insights from teams within Apple who have adopted concurrency in their own APIs, and learn best practices for migrating to or adopting Swift concurrency in…

Learn what associatedtype in Swift is, why it matters, and how it powers SwiftUI. Includes clear explanations, real-world examples, and architecture patterns.

Greetings, traveler! Counters with a rolling, odometer-like feel are a familiar interaction pattern in modern interfaces. You can see this kind of visual treatment in products such as YouTube when numeric values update on screen. In SwiftUI, reaching a similar…

Greetings, traveler! Every experienced iOS engineer eventually runs into the same unsettling moment: you navigate back from a screen, expect deinit to fire, and nothing happens. The view disappears but the memory does not. In SwiftUI projects, this behavior…

Greetings, traveler! Concurrency in modern iOS applications shows up almost everywhere. Networking, database access, image processing, and even parts of UI logic often run in parallel. The system schedules work across multiple threads, and for the most part…

Greetings, traveler! Swift Concurrency was introduced to address a long-standing problem in application development: writing concurrent code that remains correct as systems grow in complexity. Coordinating work across threads has traditionally relied on conventions…

Greetings, traveler! Reference counting is one of those topics every iOS developer learns early and then rarely revisits in depth. At the surface, it feels predictable: objects are retained, released, and eventually deallocated. Underneath, the implementation…

Issue #1039
Actor isolation in Swift 6 is not binary. A type can be mostly isolated while selectively exposing some members to callers from any context. A function can accept any actor and run directly on its executor without being bound to it permanently.…

Issue #1037
Enabling Swift 6 strict concurrency checking (SWIFT_STRICT_CONCURRENCY = complete) catches data races at compile time, but it does not protect you fully at runtime. The compiler also injects dynamic isolation assertions at actor and GCD boundaries.…

Monolithic views are the most common issue in SwiftUI codebases, especially among inexperienced developers. While the declarative nature of SwiftUI makes it possible to quickly put together complex user interfaces, it also makes it easy to create massive…

Discover the benefits of using the Time Profiler and AI Agents for optimizing app performance effectively.

Understand the role of immediate tasks in Swift 6.2 and learn when to implement them in your concurrent programming.

Explore suspension points in Swift Concurrency and learn how they affect task execution and app performance.

Swift protocols comes with trade-offs at every turn. Understanding them is the key to a successful design.

Building a test clock in Swift sounds simple. Making it deterministic under @MainActor is where the real concurrency model reveals itself.

Whenever you consider creating a scrollable screen in SwiftUI, you might think of using a List. However, it’s not always the best choice. Lists are great for displaying uniform data. For anything else, a ScrollView with a lazy stack is almost always the best…