by Fatbobman
From Using AI to Delegating Work to AI (Part 1): Why I No Longer Wait for Stronger Models
From Q&A and code generation to letting agents take on more complete pieces of work, I have now been using AI for several years.
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Aug 24, 2026 • Issue #150
AI Wanted to Give Up. The Human Didn’t.
Recently, while debugging an issue in the Intel Xe GPU driver, Linus Torvalds went through what he himself called a “de...
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by Fatbobman
From Using AI to Delegating Work to AI (Part 2): What I Mean by Delegability
How to build a trusted AI collaborator? Discover "delegatability" using a deterministic runtime and external docs, featuring a practical Task-Driven workflow guide.
by Fatbobman
ContentBuilder Explained: The Secret Behind SwiftUI's Type-Checking Speedup
In WWDC 2026, Apple engineers introduced a new SwiftUI feature — ContentBuilder. From the usage perspective, it seems to be nothing more than a ViewBuilder with a wider scope. Apple also claims this adjustment can significantly improve type-checking performance. This article will dissect the essence of ContentBuilder and explore the secrets behind the performance boost.
by Fatbobman
Controlling Orphans in SwiftUI Text: Uncovering the Undocumented avoidsOrphans
SwiftUI's Text has a default behavior: when the final line of a paragraph is left holding a single stranded word or character, it proactively pushes the complete word group from the preceding line down to join it, so that nothing is left standing alone. This bit of thoughtfulness is right most of the time, but it comes at a cost — the preceding line may be left with a wide gap. In narrow containers, or in mixed Chinese-English typesetting, that can end up disrupting the balance of the paragraph rather than preserving it.
Guest Post by Megabits
Liquid Glass: A Field Guide to UIKit Compatibility Pitfalls
Although Liquid Glass has been around for two years, the compatibility issues it introduced haven’t completely disappeared. Drawing on a real-world project, SLIT_STUDIO developer Megabits summarizes several common UIKit adaptation pitfalls and the solutions he used to address them.
by Fatbobman
Debugging Notes on Two SwiftUI Animation Bugs
Easy-to-use animation has always been one of SwiftUI's defining features. But the nature of a declarative framework is a double-edged sword: once an animation misbehaves, tracking down the cause is often trickier than in an imperative framework. This post records two SwiftUI animation bugs I ran into over the past two weeks, along with how I tracked each of them down.
by Fatbobman
From Size Class to Available Space: Is horizontalSizeClass Still Reliable?
Starting with WWDC 26, when an iPhone app is mirrored to a Mac through iPhone Mirroring, its window can be freely resized. At the same time, iPhone-only apps running on iPad will also enter a resizable environment. Even without updating a physical device to a beta system, developers can already experience this change through Xcode 27 previews or the iOS 27 simulation environment in Device Hub.
by Fatbobman
Core Data + Observation: From Property-Level Reactivity to a Freer Mental Model
The introduction of the Observation framework has refined SwiftUI’s state reactivity from the object level down to the property level, significantly reducing many unnecessary view computations caused by coarse-grained observation. I recently explored and implemented Observation support in Core Data Evolution, giving `NSManagedObject` property-level precise observation capabilities. This article discusses the motivation behind this feature, how to use it, its implementation approach, the engineering challenges involved, and some of the trade-offs made during development.
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Why Child @State Won't Update from Parent in SwiftUI
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How to Batch Delete Data in SwiftData
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Is Entity Inheritance Slowing Down Your SwiftData/CoreData App?
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Formatting Person Height vs. Road Distance in Swift
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Swift 6 Thread Safety: Replace @unchecked Sendable with Mutex
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