This post documents a recent debugging journey: starting from a test failure, tracing all the way down to the Core Data SDK interface, and ultimately discovering that the key change had nothing to do with the Swift compiler itself — it was how NSManagedObjectContext is imported into Swift that had changed.
Unexpectedly, Apple has directly provided support for Claude Code/Codex in Xcode 26.3. With this update, developers can finally use native AI Agents elegantly within Xcode. Over the past two days, I’ve conducted a series of experiments with this new version, including configuring MCP and writing an adaptive `CLAUDE.md`. This article uses Claude Code as an example to share some tips that go beyond the official documentation.
Independent developer Sintone shares a deep dive into building a macOS screen recorder. Learn practical solutions for ScreenCaptureKit errors (-3821), high-performance video composition with Metal, and optimizing complex SwiftUI timelines using the new @Observable macro.
Swift 6 introduced many new features and keywords for concurrency. While many of these might be rarely used in daily development, encountering specific scenarios without understanding these new concepts can lead to hitting a wall, even with AI assistance. In this post, I will walk through a concurrency issue encountered during development testing to introduce how to utilize **`@isolated(any)`** and the **`#isolation`** macro. These tools enable function isolation inheritance, allowing the compiler to automatically infer the execution context of closures.
tvOS is far more than just an enlarged iPad. This article is an engineering log of the Syncnext player, providing an in-depth analysis of real pitfalls in Apple TV development: from the Focus mechanism, harsh storage constraints, to SwiftUI workarounds and AVPlayer deep optimization, helping developers "survive" on the tvOS platform
Long before Apple’s official entry, Andy Liu and his MadMachine team spent years pioneering embedded Swift. Taking a unique path for complex development scenarios, they’ve built a perspective different from the mainstream. I invited Andy to share their journey—both as a historical record and a fresh outlook for the community.
Building an indie product sounds easy, but you don't realize how deep the water is until you jump in. This is the true story of an indie developer turning a small workplace requirement into a flagship product. We follow the perspective of Zipic's creator, Shili, to review the journey from 0 to 1. This part focuses on product design and decision-making.
The Mac App Store is simple to use, but it may not be suitable for all products. In this article, we follow the perspective of Zipic creator Shili to solve the distribution and sales problems of a macOS indie app.