Antoine v.d. SwiftLee
@twannl
I teach 150K developers how to write better apps faster through my developer tool, blog, and newsletter. Join my free course to get started 👇🏻
858 Following 74.8K Followers
I can't stress this enough: if you hit a performance issue in your app, verify whether it also happens while running on a device, built with a release configuration. This story proves it again.
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I launched a new iOS app!
Yes, it's a crowded scene, but yes, I think we app developers can make a difference with our experience. I'll keep track of achievements in this 🧵
I did not have an app that's usable for a larger audience, so I'm super excited.
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Simulator screenshots are usually hidden one Finder trip away.
I built RocketSim’s floating capture windows so screenshots and recordings stay next to the Simulator, stacked and ready to drag, copy, or save.
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I can't stress this enough: if you hit a performance issue in your app, verify whether it also happens while running on a device, built with a release configuration. This story proves it again.
Show more
I launched a new iOS app!
Yes, it's a crowded scene, but yes, I think we app developers can make a difference with our experience. I'll keep track of achievements in this 🧵
I did not have an app that's usable for a larger audience, so I'm super excited.
Show more
Reduce token usage in Cursor, Claude, and Codex
🔍 What 1,674 of my agent sessions revealed
🪝 One global hook for smaller Xcode build logs
📋 10 rules to add to every agent
#swiftlang# #iosdev#
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Simulator screenshots are usually hidden one Finder trip away.
I built RocketSim’s floating capture windows so screenshots and recordings stay next to the Simulator, stacked and ready to drag, copy, or save.
Show more
SwiftLee Weekly Issue 343 was sent to 30,911 subscribers with content from @AntonGubarenko, @iosartem, @jordanmorgan10, @nilcoalescing, @rocketsim_app
Reviewing your AGENTS.md and Agent Skills: it's something I do regularly. This time, I found way more improvements than expected, and I'm sharing you the results and best practices.
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It's over! No, not about your career as an engineer. Your role just changed, as @jordanmorgan10 explains. If you accept that thought, fun can take over and possibilities will be endless.
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A static analysis of your SwiftUI code, served via an MCP. @nilcoalescing released SwiftFairy that does exactly this! I wonder whether and Agent Skill + CLI could be even more effective, but this idea is super interesting and will save you tokens.
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Proud to be mention in the latest SwiftLee 🎉
SwiftLee Weekly Issue 343 was sent to 30,911 subscribers with content from @AntonGubarenko, @iosartem, @jordanmorgan10, @nilcoalescing, @rocketsim_app
Reviewing your AGENTS.md and Agent Skills: it's something I do regularly. This time, I found way more improvements than expected, and I'm sharing you the results and best practices.
Show more
It's over! No, not about your career as an engineer. Your role just changed, as @jordanmorgan10 explains. If you accept that thought, fun can take over and possibilities will be endless.
Show more
A static analysis of your SwiftUI code, served via an MCP. @nilcoalescing released SwiftFairy that does exactly this! I wonder whether and Agent Skill + CLI could be even more effective, but this idea is super interesting and will save you tokens.
Show more
Swift Charts are powerful and you might not always realize how much you can do with this. How about a sunburst diagram, as @nilcoalescing explains?
A simple SwiftUI animation might be doable, but what if you want a sequence of steps? This technique by @nilcoalescing works for that.
SwiftLee Weekly Issue 337 was sent to 31,162 subscribers with content from @AntonGubarenko, @azamsharp, @fatbobman, @iosartem, @nilcoalescing, @rocketsim_app
Xcode 27 beta 2 ships with a new MCP for LLDB!
I wish I was not on a holiday so I could play around with it 🙈 who can do it for me?
