Combine and SwiftUI views In this post, Majid demonstrates how we can use SwiftUI's onReceive view modifier to react to values emitted from a Combine publisher. I really like the approach of wrapping the publisher creation and onReceive logic into a custom view modifier to make it reusable. Posted on May 31, 2020 #ios, combine, swiftui
Swift tip: marking unused required initializers as unavailable Jesse Squires shares a Swift tip to help us avoid accidentally calling an irrelevant type initializer. Posted on May 29, 2020 #ios, macos, uikit
An effective way to clear entire Userdefaults in Swift This is a nice, simple Swift tip from Oh my Swift. It uses an iOS app's bundle identifier to simplify the task of clearing all the UserDefault values associated with the app. Posted on May 28, 2020 #ios
What's new in Swift 5.3? Tibor Bödecs with a post that showcases some of the latest language features coming in Swift 5.3. All of the improvements Tibor describes are really cool, but my favourite is the implementation of SE-0268, which improves didSet semantics. It's a subtle, low-profile change which improves the performance of the language. Posted on May 27, 2020 #swift 5.3
The Future of Swift on the Server This is a really interesting piece from Tim Condon on the future of server-side Swift. Tim first writes about IBM's decision to step away from Swift, something which was obviously disappointing for the community. However, Tim then makes a solid argument for why he thinks the future is looking bright for Swift on the server, considering the planned roadmap for Swift 6 and numerous server-related non-Apple projects. I really like the reminder of how young Swift is, particularly when compared to languages such as Go and Rust. Posted on May 25, 2020 #server-side
How to Define a Protocol With @Published Property Wrapper Type One current limitation of Swift's property wrapper feature is that we cannot apply a property wrapper to a property defined in a protocol. Here, Lee demonstrates a workaround to this limitation, showing us how we can apply the @Published property wrapper to a protocol property. Posted on May 24, 2020 #property wrapper
Understanding type erasure in Swift In this post Donny Wals explains type erasure. Donny first describes why type erasure is useful, and then shows us how we can apply it in our code. This is a great post, and explains a complicated topic in a very accessible manner. Posted on May 22, 2020 #type erasure
The Some Keyword In Swift In this post Reinder de Vries explains a language feature introduced with Swift 5.1 - opaque types. Reinder describes what they are, how they relate to Generics, and how they can solve a common problem encountered when using protocols with associated types. Posted on May 20, 2020 #some
Template-view pattern in SwiftUI Continuing the SwiftUI theme, this post from Majid describes a technique which can be used to support dynamic type in stack views. I really like posts like this that demonstrate how a bit of creativity can go a long way to solving common UI issues. Posted on May 18, 2020 #swiftui
SwiftUI Navigation in List View: Programmatic Navigation It's been a while, but I'm planning to again focus some of my time on Swift. And with that...this is a nice idea to provide a solution to programmatic navigation in SwiftUI. Code samples included 🥳. Posted on May 16, 2020 #swiftui