Learnings from modernizing the window handling of my Mac app after upgrading to SwiftUI 4. Explaining .openWindow, .windowResizability & more. — SwiftUI is getting significantly better every year. Last year (in 2022), we not only received improved navigation APIs. Apple also greatly improved the support for macOS — I would argue that the SwiftUI APIs we received for Mac app development in SwiftUI 4 are on a 1.0 level and finally…

1-Year Anniversary: Summaries on GitHub! AsyncStream, Attached Macros (in SwiftPM), Package Publish, Parameter Packs, Feature Flags & Foundation Preview. — It’s already been a whole year since I started writing this newsletter! 🥳 Can you believe it? I’ve had so much fun sharing all of the latest news and updates about Swift with you over the past year. …

WWDC is only weeks away, so it’s time for me to update my wishlist. One wish came true last year, how many will it be in 2023? — I wrote an article with the exact same purpose last year already for WWDC 2022, listing my top 3 wishes. Thankfully, one of them (wish #3) was actually fulfilled, the Xcode 14 Release Notes explain the related new feature like this: Simplify an app icon with a single 1024x1024 image…

How to enable Swift 6 mode for your Xcode projects & SwiftPM modules today. And what the migration experience is like. — What is “Swift 6 mode”? Swift 6 won’t be released in 2023 anymore, that has been made clear by Doug Gregor from the Swift Language Workgroup. But did you know that Apple has already shipped parts of Swift 6 in 5.8? Yes, it’s true. Some parts of Swift that shipped with Xcode 14.3 a few…

How I fixed a subtle bug in SwiftUI Pickers in my app by using a Property Wrapper instead of conforming Binding to Equatable. — It might sound counter-intuitive why I did that, but in my app RemafoX I needed to conform the Binding type, which is shipped with SwiftUI to bind changes in views to data, to the Equatable protocol to be able to pass a Binding object around in my apps data layer…

Sharing my learnings and my code structure after migrating my app to the vastly modernized APIs of TCA 1.0. — Intro and Results I just migrated my app RemafoX which was built upon The Composable Architecture (TCA) version 0.35.0 to the new 1.0 style of APIs. While the time between the release of 0.35.0 and the current beta of 1.0 spans less than a year, it is important to note that no less…

How to organize your apps Swift modules for clarity and convenience using a hidden (unofficial) Swift feature. A practical solution for small to medium-sized apps. — The Problem I recently decided to work on the biggest feature for RemafoX to date and while I was thinking about where to start, I found myself drowning in over 70 targets for my less-than-one-year-old project. Note that I’m modularizing my app for clear code segregation and faster build times (= faster…

Expression Macros, Deprecate @UIApplicationMain, Forward Declared ObjC Interfaces, Swift 5.8 & 6 schedule — The last issue had an unusual delay already because I had to move the newsletter over from one service to another while I was on travel in Japan. This time around I had to skip an entire month because I had to move my flat from one city to another…

Registry auth, Opt-In Reflection, if-switch Expressions, Vision documents, DiscardingTaskGroups, and Foundation rewrite. — One of the side effects of Elon Musk taking over Twitter was that the provider hosting this very newsletter is being shut down as soon as this month. So, while I’m still traveling Japan (sadly, only a few days left 😔), I had to find a new provider and migrate…