Hi, my name is Donny

Swift Concurrency provides us with loads of cool and interesting capabilities. For example, Structured Concurrency allows us to write a hierarchy of tasks that always ensures all child tasks are completed before the parent task can complete. We also have features like cooperative cancellation in Swift Concurrency which means that whenever we want to cancel a task, that task must proactively check for cancellation, and exit when needed. One API that Swift Concurrency doesn't provide out of the box is...

Swift 6 has been available to us for the better part of a year now, and more and more teams are considering or looking at migrating to the Swift 6 language mode. This typically involves trying to turn on the language mode or turning on strict concurrency, seeing a whole bunch of warnings or errors, and then deciding that today is not the day to proceed with this migration. Today I would like to propose an approach to how you...

The Xcode 16.3 beta is out, which includes a new version of Swift. Swift 6.1 is a relatively small release that comes with bug fixes, quality of life improvements, and some features. In this post, I’d like to explore two of the new features that come with Swift 6.1. One that you can start using immediately, and one that you can opt-in on if it makes sense for you. The features I’d like to explore are the following: Changes to...

When you're using Git for version control, you're already doing something great for your codebase: maintaining a clear history of changes at every point in time. This helps you rewind to a stable state, track how your code has evolved, and experiment with new ideas without fully committing to them right away. However, for many developers, Git is just another tool they have to use for work. They write a lot of code, make commits, and push their changes without...

On iOS 17 and newer, you have access to the Observable macro. This macro can be applied to classes, and it allows SwiftUI to officially observe properties on an observable class. If you want to learn more about Observable or if you're looking for an introduction, definitely go ahead and check out my introduction to @Observable in SwiftUI. In this post, I would like to explore how you can observe properties on an observable class. While the ObservableObject protocol allowed...

When you turn on strict concurrency checking or you start using the Swift 6 language mode, there will be situations where you run into an error that looks a little bit like the following: Main actor-isolated property can not be referenced from a Sendable closure What this error tells us is that we're trying to use something that we're only supposed to use on or from the main actor inside of a closure that's supposed to run pretty much anywhere....