Jacob Bartlett @jacobtechtavern
I write about iOS performance, advanced Swift concurrency, and under-the-hood internals at Jacob’s Tech Tavern. blog.jacobstechtavern.com London Joined December 2020-
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Advanced Swift Internals: How UNOWNED references crash: Use unowned when you're absolutely certain the referenced object will outlive the reference. If you're wrong, the runtime will let you know. Violently. Unowned references, like weak references, prevent retain cycles.…
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Oh, no! Somebody leaked my publication schedule for the next couple months: - Sep 8 - Banger - Sep 16 - Banger - Sep 22 - Miss - Sep 30 - Banger - Oct 6 - Miss - Oct 14 - Banger - Oct 20 - Banger - Oct 28 - Miss - Nov 3 - Banger
Is Swift 6 strict concurrency going to be our Python 3 moment?
⚠️🚨 Every phone owner in the UK just got sent this very, very loud, interrupting alert. Deep dive next week??
What keyboard shortcuts could you not live without? Here's some I use at least 100x per day: Text Editing - Shift+Arrow Left/Right highlights letters - Shift+Alt+Arrow moves highlighting full words delimited by spaces or caps - Shift+Alt+CMD highlights entire lines Browser…
I honestly think training juniors would be a lot easier off people stopped using handwavey metaphors and trusted them to understand the real explanation
Is Sam Altman running HS2?
Is Sam Altman running HS2?
High-productivity Claude Code tips: Extended Thinking Modes Claude has a few secret keywords that actually dramatically affect how it behaves. The thinking modes are the most important. You simply include the keyword “think” to trigger extended thinking mode, basically giving…
I'm actually rewatching It's Always Sunny now and just got to this episode. It reminded me of my first ever viral writing hit. blog.jacobstechtavern.com/p/the-dennis-s…
Advanced Swift Concurrency: Launch Speed Optimisation You can parallelise app launch work in didFinishLaunchingWithOptions using a GCD DispatchGroup to wait and Swift's taskGroup to parallelise steps This avoids performing all critical work serially on the main thread - but use…
Twitter is so annoying literally all I need to do for 10k impressions is not include a link in my post
Sometimes I'll write a sentence and can't believe my writing is free to read.
Has anyone read my SwiftUI + Metal shader tutorial yet? blog.jacobstechtavern.com/p/metal-in-swi…
How to work with Agentic AI without turning off your brain After spending an evening in a “pls fix” doom-loop, I deleted everything and started from scratch the next morning, a little less well-rested than I’d have liked. I still used AI-assisted coding the next day, but on my…
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