SwiftLee Weekly - Issue 269

This week's SwiftLee Weekly covers: On-Device AI Models A single line that bricks your iPhone What happens if you don't know the answer? Enjoy this week's SwiftLee Weekly! THIS WEEK'S BLOG POST ​SwiftUI ForEach Explained with Code Examples​ ForEach in SwiftUI is an essential element that we all use, but it can sometimes be confusing. The use of the Identifiable protocol is key, and an enumerated approach can help you make index-based adjustments for the presented content. SPONSORED ​What's the cost of not prioritizing mobile release management?​ Join mobile leaders from Skyscanner and SoFi on May 22 to find out just how much your outdated mobile release processes are actually costing you—and learn the ROI of updating how you work and ship. Register for the live discussion. CURATED FROM THE COMMUNITY ​How On-Device AI Models Find Your Best Tinder Profile Photos​ I had the opportunity to talk with Thomas personally about this feature, he demonstrated it, and I was blown away. Amazing feature and this article provides you a peek behind it! ​medium.com​ ​Fitting the Lapse experience into 15 MegaBytes​ How do you reduce your app clip's size to less than 15MB? Several steps and techniques can do this, and you'll learn them in this article. ​blog.jacobstechtavern.com​ ​Unlocking the Real Power of Swift 6's Typed Throws with Error Chains​ An interesting approach towards using typed throws to keep the returned error type consistent, even if another type of error gets thrown! ​fline.dev​ ​How a Single Line Of Code Could Brick Your iPhone​ Guilherme Rambo reveals a critical iOS vulnerability where a single line of code using the Darwin notification API could trigger a fake "Restore in Progress" state. These articles always blow my mind. ​rambo.codes​ ​Drawing symbols with Canvas​ The Canvas SwiftUI element lets you draw dynamic graphics efficiently in SwiftUI by using a GraphicsContext, giving you more control and better performance than stacking multiple views. Fun to play around with, but also essential to know it exists! ​createwithswift.com​ SWIFT EVOLUTION An overview of last week's Swift Proposal state changes. Check them out when they're in review, as it's your opportunity to influence the direction of Swift's future. ImplementedSE-0457Expose attosecond representation of `Duration` ImplementedSE-0462Task Priority Escalation APIs ImplementedSE-0463Import Objective-C completion handler parameters as `@Sendable` ImplementedSE-0466Control default actor isolation inference ImplementedSE-0469Task Naming Active ReviewSE-0479Method and Initializer Key Paths Active ReviewSE-0480Warning Control Settings for SwiftPM CODE SNIPPET OF THE WEEK Loops with Labels You can find this post on Twitter/X, LinkedIn, or Bluesky. Antoine v.d. SwiftLee  @twannl Did you know you can give a label to loops in Swift? It can help you break or continue an outer loop when using a child loop ✨ 2:54 AM • Apr 28, 2025 11 Retweets 98 Likes Read 6 replies ​ QUESTION OF THE WEEK " What happens if you get a question asked after a talk and you don't know the answer? An interesting thing happened yesterday at my Deep Dish talk. I got a question and I didn't know the answer—yes, I don't know everything! I'm joking here, but somehow, people didn't expect me to say "I don't know". There was even someone that found it the highlight of the Q&A. It shows that even those that write an article every week, that seem to be very knowledgeable, still don't know everything. You might read this and think, of course that's how it is. But still, I believe it's important to emphasize this and that's also why I didn't doubt to say "I don't know" on stage. We're all learning, we're all developers, and you can't simply know it all. Want to have your question answered next week? Ask your question via this form (anonymously) or reply to this email with your question. EARN ROCKETSIM LIFETIME Share and Earn RocketSim Lifetime & a 1-on-1 coaching session Apple has recognized RocketSim as an Essential Developer Tool in the Mac App Store, and now you can get lifetime Pro access by sharing your unique referral link! ​​ How to get started: Click to share on X/Twitter, LinkedIn, Bluesky​ Or copy your referral link to share anywhere: ​https://join.swiftlee-weekly.com/9f07646e/ ​​ Rewards: Earn your first reward after just 3 sign-ups! Check your progress anytime using your referral dashboard. The grand prize? A personalized 1-on-1 career coaching session! Several subscribers have already claimed their rewards—will you be next? Thank you so much for your support, and until next Tuesday, Antoine Thanks for being a SwiftLee subscriber! ​ All my content is available to you for free. Like what I do and want to support me? ​Buy me a coffee or try RocketSim, an Essential Developer Tool as recommended by Apple. This newsletter is built with Kit. Need my experience? Book a 1:1 with me. ​ ​Unsubscribe | Unsubscribe from SwiftLee Weekly​