When declaring a Swift property, we use either the let or var keyword depending on whether we want our new property to be read-only once assigned through the enclosing type’s initializer, or whether we want to allow the property to be mutated and re-assigned multiple times. However, that’s not the only difference between using let…
Adam Bell returns to the podcast to discuss different techniques and approaches for optimizing UI code, and how to utilize tools like animations in order to build iOS apps that feel fast and responsive. Sponsors NordVPN: Get an exclusive discount on NordVPN’s excellent VPN service, by going to nordvpn.com/sundell. They even have a 30-day money-back…
Ever since Swift was first introduced, it’s been very common to need to use type erasure when working with generic protocols — ones that either reference Self within their requirements, or make use of associated types. For example, in earlier versions of Swift, when using Apple’s Combine framework for reactive programming, every time we wanted…
Ben Scheirman returns to the show to discuss how Swift’s built-in concurrency features, such as async/await and tasks, can be used in practice when building apps for Apple’s platforms. Sponsors Essential Developer: Join the iOS Architect Crash Course to accelerate your journey towards becoming a senior developer. It’s 100% free and held entirely online. NordVPN:…
On this final episode of 2022, Nick Lockwood returns to the show to discuss the overall evolution of Swift and its ecosystem of tools and libraries. How has Swift changed since its original introduction in 2014, how does it compare to other modern programming languages, and how might the language continue to evolve in 2023…
When building various kinds of scrollable UIs, it’s very common to want to observe the current scroll position (or content offset, as UIScrollView calls it) in order to trigger layout changes, load additional data when needed, or to perform other kinds of actions depending on what content that the user is currently viewing. However, when…
One of the most interesting aspects of SwiftUI, at least from an architectural perspective, is how it essentially treats views as data. After all, a SwiftUI view isn’t a direct representation of the pixels that are being rendered on the screen, but rather a description of how a given piece of UI should work, look,…
Ben Cohen, manager of the Swift team at Apple, joins John on this WWDC22 special to discuss Swift 5.7, how generics have been made more powerful and easy to use, and how the language is expected to evolve towards Swift 6. Sponsors Bitrise: Rock-solid continuous integration for your Swift projects. Go to bitrise.io/swift to get…
SwiftUI’s various stacks are some of the framework’s most fundamental layout tools, and enable us to define groups of views that are aligned either horizontally, vertically, or stacked in terms of depth. When it comes to the horizontal and vertical variants (HStack and VStack), we might sometimes end up in a situation where we want…
Natalia Panferova joins John to discuss some of the key new features that are coming to SwiftUI and UIKit in iOS 16, and to talk about her experience working on SwiftUI at Apple. Sponsors NordVPN: Get an exclusive discount on NordVPN’s excellent VPN service, by going to nordvpn.com/sundell. They even have a 30-day money-back guarantee.…