Learn more about Swift

Code has dependencies. It’s something that I consider universally true in one way or another. Sometimes these dependencies are third party dependencies while other times you’ll have objects that depend on other objects or functionality to function. Even when you write a function that should be called with a simple input like a number, that’s […]

We all know that print is the most ubiquitous and useful debugging tool in a developer’s toolbox. Sure, we have breakpoints too but what’s the fun in that? Sprinkling some prints throughout our codebase to debug a problem is way more fun! And of course when we print more than we can handle we just […]

For and forEach are both ways to loop over a collection of items in Swift. They have some subtle differences that are worth being aware of so you can make an informed decisions when choosing between the two.

Swift 5.5 introduced loads of new concurrency related features. One of these features is the MainActor annotation that we can apply to classes, functions, and properties. In this post you’ll learn several techniques that you can use to dispatch your code to the main thread from within Swift Concurrency’s tasks or by applying the main […]

If you’re keen on reading about what’s new in Swift or learn about all the cool things that are coming up, you’re probably following several folks in the iOS community that keep track and tell you about all the new things. But what if you read about an upcoming Swift feature that you’d like to […]

It’s common for developers to leverage protocols as a means to model and abstract dependencies. Usually this works perfectly well and there’s really no reason to try and pretend that there’s any issue with this approach that warrants an immediate switch to something else. However, protocols are not the only way that we can model […]

The long awaited iOS 17.4 and iPadOS 17.4 have just been released which means that we could slowly but surely start seeing alternative app stores to appear if you’re an EU iOS user. Alongside the 17.4 releases Apple has made Xcode 15.3 and Swift 5.10 available. There’s not a huge number of proposals included in […]

When Swift 2.0 added the throws keyword to the language, folks were somewhat divided on its usefulness. Some people preferred designing their APIs with an (at the time) unofficial implementation of the Result type because that worked with both regular and callback based functions. However, the language feature got adopted and a new complaint came […]

Note: This is an updated post for Swift 6.2. For a full overview on how Swfift 6.2 has changed where your code runs, take a look at this overview of Swift 6.2 features. Swift’s current concurrency model leverages tasks to encapsulate the asynchronous work that you’d like to perform. I wrote about the different kinds […]

With iOS 17, we’ve gained a new way to provide observable data to our SwiftUI views. Until iOS 17, we’d use either an ObservableObject with @StateObject, @ObservedObject, or @EnvironmentObject whenever we had a reference type that we wanted to observe in one of our SwiftUI views. For lots of apps this worked absolutely fine, but […]