Although Swift 5.5’s new concurrency system is becoming backward compatible in Xcode 13.2, some of the built-in system APIs that make use of these new concurrency features are still only available on iOS 15, macOS Monterey, and the rest of Apple’s 2021 operating systems. For example, if we try to use the new async/await-favored version…
Christian Selig returns to the show to talk about how he used the new Safari extension system on iOS to build Amplosion and Achoo, the pros and cons of open source, and how developers can utilize other iOS 15 and iPhone hardware features. Sponsors Quickly checking out either of the following two sponsors is a…
As a general rule of thumb, all of the APIs and system features that Apple introduces in a given version of iOS can only be used when targeting that particular version, or any subsequent ones. However, this year there are a few very interesting exceptions to that rule, in that certain SwiftUI APIs that were…
To say that SwiftUI’s List is the equivalent of UIKit’s UITableView is both true and false at the same time. It’s definitely true that List offers a built-in way to construct list-based UIs that are rendered using the same overall appearance as when using UITableView — however, when it comes to mutations, we instead have…
Combining Swift’s powerful generics system with the fact that any Swift type can be extended with new APIs and capabilities enables us to write targeted extensions that conditionally add new features to a type or protocol when it fits certain requirements. It all starts with the where keyword, which lets us apply generic type constraints…
Learn how to fully utilize Swift’s powerful generics system to write reusable types, functions, extensions, and protocols. → Check it out
Starting in Xcode 13.2, Swift’s new suite of concurrency features are now backward compatible all the way back to iOS 13, macOS Catalina, watchOS 6, and tvOS 13. The new concurrency features include async/await, actors, structured concurrency, async sequences, and more. While Xcode 13.2 is, at the time of writing, currently in beta — this…
My thanks to the team behind the clipboard management app Paste for sponsoring Swift by Sundell last week, and for helping me continue to keep the site completely free to access for everyone. Paste is like a time machine for your clipboard. It stores every link, image, file, and piece of code that you copy…
One of the major advantages of Swift’s built-in Codable API is how the compiler is able to automatically synthesize many different encoding and decoding implementations when using it. In many cases, all that we have to do to enable a Swift type to be serialized into formats like JSON is to mark it as Codable,…
Discover Swift’s Codable protocol, how to fully leverage its compiler synthesis features, and how to use its surrounding APIs to write efficient serialization code. → Check it out