This week's SwiftLee Weekly covers: Black Friday discounts Using @Observable with UIKit A SwiftData change you might not have noticed Enjoy this week's SwiftLee Weekly! THIS WEEK'S BLOG POST Black Friday: SwiftLee Courses & RocketSim It's that time of year where many products provide Black Friday discounts! Call it cyber week, cyber-something, but I've joined the trend and share the discounts for RocketSim and my courses. SPONSORED iOS auth eating your time? Clerk’s SwiftUI SDK drops sign-in,...
8 days ago • 4 min read
This week's SwiftLee Weekly covers: Approachable Concurrency Xcode Instruments & suspension points Two defeated conference challenges Enjoy this week's SwiftLee Weekly! Next week, I'm dropping my Black Friday sales. Click here if you want to receive the deals this monday in your inbox. THIS WEEK'S BLOG POST Approachable Concurrency in Swift 6.2: A Clear Guide After giving my talk at Do iOS and Pragma Conf, it's time to give you the same learnings in both an article and video. Approachable...
15 days ago • 6 min read
This week's SwiftLee Weekly covers: From App Idea to 10K MRR From Swift to Mojo One Swift mistake... Enjoy this week's SwiftLee Weekly! THIS WEEK'S BLOG POST MainActorMessage & AsyncMessage: Concurrency-safe notifications A few warnings were hard to get rid off when migrating to strict concurrency. One of those were notifications, which are tightly connected to GCD dispatch queues. With the new API discussed in this article, you'll be able to post and observe notifications on specific...
22 days ago • 5 min read
This week's SwiftLee Weekly covers: Simulator Camera Testing A goodbye to a long running conference Optimize the performance of your SwiftUI app Enjoy this week's SwiftLee Weekly! EARLY BLACK FRIDAY ACCESS Your exclusive SwiftLee discount ends tonight As a SwiftLee Weekly reader, you’re getting early access to Black Friday discounts—before anyone else. Don’t miss your chance to grab your favorite at a special price. Early access bundles: The Courses Bundle ($228, now $112)Going Indie + Swift...
29 days ago • 5 min read
This week's SwiftLee Weekly covers: Xcode Build Performance Analysis Swift for Android WWDC APIs timeline But also: an early exclusive Black Friday discount for you as a SwiftLee Weekly subscriber. Enjoy this week's SwiftLee Weekly! THIS WEEK'S BLOG POST Build performance analysis for speeding up Xcode builds Build performance—is it still a thing to look at nowadays? Yes, Xcode build times improve every year at WWDC, but my experience is that builds still become slower over time. Especially...
about 1 month ago • 6 min read
This week's SwiftLee Weekly covers: Glass Views & Animations Singletons & Swift Concurrency Structured experiments Enjoy this week's SwiftLee Weekly! THIS WEEK'S BLOG POST SwiftUI Architecture: Structure Views for Reusability and Clarity I often find myself restructuring views after time happened and ContentView became too large. The techniques I've learned over the years are explained in this week's blog post. For those that are more visually oriented, I've also published a video for this...
about 1 month ago • 5 min read
This week's SwiftLee Weekly covers: My AI Agents journey The importance of Swift Migration Tooling Custom ViewModifiers are useless Enjoy this week's SwiftLee Weekly! THIS WEEK'S BLOG POST Why Swift Migration Tooling Matters Manually migrating to Swift's upcoming features is a bad idea. In fact, it can suddenly result in your code running more on the main thread, blocking the UI, and decreasing user experience. I'm using this typical example in a detailed post on how you can benefit from...
about 2 months ago • 5 min read
This week's SwiftLee Weekly covers: Programmatic navigation in SwiftUI The 5 biggest async/await mistakes The best mobile app monitoring product Enjoy this week's SwiftLee Weekly! THIS WEEK'S BLOG POST The 5 biggest mistakes iOS Developers make with async/await After migrating 20+ packages for RocketSim and developing a 65+ lesson course on Concurrency, I concluded that a few mistakes are most common. This led me to decide to spend over 50 hours offering a free 5-day email course to help you...
about 2 months ago • 4 min read
This week's SwiftLee Weekly covers: Next-level Xcode Simulator recordings Additional iOS 26 documentation for Agents.md Swift Package Manager traits Enjoy this week's SwiftLee Weekly! THIS WEEK'S BLOG POST Derived Data: 5 Things iOS Developers Do Wrong It's one of the most important directories when it comes down to development with Xcode: The Derived Data folder. Some of you might know all about it, some will hear about it for the first time in this newsletter. I've explored it quite a bit...
2 months ago • 4 min read