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Antoine van der SwiftLee

@swiftlee@mastodon.social
mastodon 4.8.0-nightly.2026-10-06
  • Open on mastodon.social

🇳🇱 #iosdev #iOS @wetransfer@mastodon.social

#swift blog: avanderlee.com
Newsletter & discounts: avanderlee.com/swiftlee-weekly-subscribe/
Simulator enhanced: rocketsim.app

476 Followers
4 Following
19 Posts
Joined February 21, 2023
Build Apps Faster:
https://www.rocketsim.app
Swift Newsletter:
https://www.avanderlee.com/swiftlee-weekly-subscribe/
Swift Blog:
https://www.avanderlee.com
Swift Jobs:
https://www.swiftleejobs.com/
Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago

Swift 6.2' Approachable Concurrency is here for a while now, but do you fully understand it? If not, you'll be happy with this article from Nikita Vasilev.

https://www.nsvasilev.com/posts/approachable_concurrency/?utm_source=mastodon&utm_medium=social&utm_campaign=swiftlee_weekly_curated&utm_content=2f09ef8cf064e03

nsvasilev.com
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Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago

A first look at what I’ve been building: RocketTrace.

It turns dense Xcode Instruments traces into ranked, measured evidence, helping you focus your investigation and verify changes with a comparable run.

Private TestFlight invites will go out in small batches:

https://rockettrace.app/?utm_source=x&utm_medium=social&utm_campaign=rockettrace_prelaunch&utm_content=before_after

rockettrace.app
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Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago

Maintaining existing Core Data code?

Use my open-source Core Data Expert Agent Skill to give your agent context on modeling, fetch requests, migrations, threading, CloudKit, and tests.

https://github.com/AvdLee/Core-Data-Agent-Skill

#swiftlang #iosdev

github.com
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Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago

iOS developers: we're working on making your developer tooling even better.

You know RocketSim, you'll love the other two Rocket apps we'll release later.

Stay tuned ⏳

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Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago

Syncing SwiftData across devices using iCloud sync? This article series by Thorsten Stark will be useful.

https://thorsten-stark.de/posts/2026-08-06-Avoiding-Duplicate-Data-With-SwiftData-iCloud-Sync-Part-2/?utm_source=mastodon&utm_medium=social&utm_campaign=swiftlee_weekly_curated&utm_content=11c79a71173d8a56

thorsten-stark.de
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Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago

Exciting times 🚀

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Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago

SwiftLee Weekly Issue 335 was sent to 31,212 subscribers with content from @johnsundell@mastodon.social, Anton Gubarenko, Mohammad Azam, RocketSim

https://swiftlee-weekly.com/issues/335/

swiftlee-weekly.com
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Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago

async/await does not make work run off the main thread by default.

That mistake can still freeze your UI during real app work.

I explain how to avoid it in my free 5-day Swift Concurrency Playbook:

https://www.swiftconcurrencyplaybook.com/?utm_source=mastodon&utm_medium=social&utm_campaign=swiftlee_social_evergreen&utm_content=swiftlee-20260726T1722-playbook_promo-005_x

#swiftlang #swiftconcurrency

swiftconcurrencyplaybook.com
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Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago
Replying to
Want to help test RocketTrace? Join the early access list: https://rockettrace.app/?utm_source=mastodon&utm_medium=social&utm_campaign=rockettrace_prelaunch&utm_content=demo_video
rockettrace.app
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Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago

From "OSLog and Unified logging as recommended by Apple":

Create structured logging using OSLog and benefit from Xcode's debugging console using filters and colored logs.

https://avanderlee.com/debugging/oslog-unified-logging/?utm_source=mastodon&utm_medium=social&utm_campaign=swiftlee_social_evergreen&utm_content=swiftlee-20260804T1756-article_plain-004_x

avanderlee.com
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Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago

From "Defer in Swift explained with Code Examples":

Learn how defer works in Swift, including execution order, cleanup use cases, and async defer support introduced in Swift 6.4.

https://www.avanderlee.com/swift/defer-usage-swift/?utm_source=mastodon

avanderlee.com
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Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago

Use SwiftUI TabView for the main areas of your app, not for every navigation choice.

Tabs work best when they help users switch between primary views without losing the shape of the app.

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Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago

My Swift Newsletter has a new landing page, what do you think?

https://swiftlee-weekly.com/

swiftlee-weekly.com
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Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago

If your project still relies on Core Data, give your agent better context before it edits persistence code.

My Core Data Expert Agent Skill is open-source and built for maintaining existing Core Data code.

https://github.com/AvdLee/Core-Data-Agent-Skill

#swiftlang #iosdev

github.com
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Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago

An inspiring new iOS 27 framework, revealing 2 new app icons, SwiftData syncing and testing.

It's what's in tomorrow's SwiftLee Weekly:
https://swiftlee-weekly.com/tomorrow

#swiftdevelopment #iosdevelopment #swiftui #swiftlanguage

swiftlee-weekly.com
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Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago

I try to avoid teaching my AI agent the same project rules every week.

Agent Skills turn repeated prompts into reusable instructions you can share across tools.

I explain when I prefer skills over AGENTS.md:

https://avanderlee.com/ai-development/agent-skills-replacing-agents-md-with-reusable-ai-knowledge/?utm_source=mastodon&utm_medium=social&utm_campaign=swiftlee_social_evergreen&utm_content=swiftlee-20260726T1722-personal_workflow-007_x

#iosdev #AI

avanderlee.com
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Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago

Don't move, boss, keep those agents running 🙅‍♂️ 🐶

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Open post
Antoine van der SwiftLee @swiftlee@mastodon.social
· 2mo ago

Claude, Codex, Cursor, they all have their own way of navigating the Simulator.
Yet, we still believe in a custom CLI + Agent Skill served through RocketSim.

Here's why:
https://www.rocketsim.app/blog/testing-ai-agents-ios-simulator/

rocketsim.app
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