Give your simulator superpowers

RocketSim: An Essential Developer Tool
as recommended by Apple

Issue 331
Jul 07, 2026

This week's SwiftLee Weekly covers:

  • Spending $10K per week on agents
  • A new Safari MCP server
  • A risk of rotating a Liquid Glass view

Enjoy this week's SwiftLee Weekly!

THIS WEEK'S BLOG POST

​Defer in Swift explained with Code Examples​

Introduced in Swift 2.0, you might wonder why I share this article now. Two reasons: Swift 6.4 introduced changes & I still think we’re not embracing defer enough in our code.
​avanderlee.com​

SPONSORED

​Tired of Fixing Xcode UI Tests Every Release?​

Drizz replaces brittle XCUITest scripts with Vision AI. Describe what to test in plain English, and Drizz validates your iOS app like a real user on real devices. No selectors, less maintenance, more confidence before every release. Explore Drizz.

CURATED FROM THE COMMUNITY

​10 Tips for Building iOS Apps That Handle Dynamic Type Well​

Must know if you take accessibility seriously. If you’re not, you’re not taking app development seriously enough!
​mobilea11y.com​

​Introducing the Safari MCP server for web developers​

Yes, we’re app developers. Yes, Chrome is more popular for web development. Yet, I’m sure you’ll be interested to find out about an official Safari MCP server!
​webkit.org​

​Debugging Notes on Two SwiftUI Animation Bugs​

The best way to learn is often by learning from others’ mistakes. Here’s Fatbobman sharing debugging notes from fixing two SwiftUI Animation bugs.
​fatbobman.com​

​Rotating Liquid Glass in SwiftUI without breaking the shape​

An innocent piece of code that rotates a SwiftUI view with a glass effect. The result, however, can be disappointing, as Artem Mirzabekian explains.
​livsycode.com​

​How To (Not) Spend $10k/wk on Coding Agents​

Tokens can be expensive, especially if you’re optimizing your agent’s workflow as much as Allen Pike did. He shares their learnings and story, absolutely a must-read if you’re into agentic development.
​allenpike.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.

WHAT I'M WORKING ON

Back into business

After two great weeks of holidays, it’s time to get back into business. Here’s what you can expect in the upcoming weeks:

  • The release of the first few modules for my new AI Fundamentals course​
  • A first introduction to a new addition to the Rocket family. Yes, we’re going to release a new app that starts with "Rocket" in the name!
  • A major update to RocketSim, with enhanced support for physical devices and more CLI functionality.

The WWDC releases are still fresh, and I’m excited to dive into adding support for new APIs. While I’m sure you know what’s new in SwiftUI or Swift Concurrency, you might not know about the new possibilities that exist for Simulators and Devices. I’ll take responsibility for just building what you need!

RocketSim’s CLI has been embraced by many existing customers, but I’m also working with a few enterprise companies that are considering using it. This requires me to apply a few important improvements that will ship over the coming weeks.

I realize I’m teasing a lot here, but it’s day 1 post-holiday, so bear with me. Stay tuned for exciting updates.

UNTIL NEXT TIME

Continue your Swift development journey

I hope you've enjoyed this week's content. You don't have to wait till next Tuesday for more insights, I share every day on these channels:

{% if subscriber.rh_reflink != blank %}Or earn lifetime access to RocketSim & my Swift Concurrency Course by becoming an affiliate of my newsletter.{% endif %}

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.

​

You're receiving this because you signed up for SwiftLee Weekly. If you'd prefer not to hear from me, you can manage your preferences here.