A super technical post about upgrading Calendar Copilot to Swift 6 and Strict Concurrency

Greetings, traveler! SwiftUI sheets are great until you need one specific behavior: react when the user tries to dismiss the sheet interactively. You can disable interactive dismissal with .interactiveDismissDisabled(), and you can provide a “Done” button…

Professional iOS Engineer specializing in SwiftUI, VisionOS, and modern Apple platforms. Expert in HealthKit, tvOS, watchOS and even some VisionOS development with 50+ technical articles and comprehensive portfolio.

Learn how to render Markdown in SwiftUI using Text and AttributedString

I didn't know what to put as a header so here are some iClouds (interesting clouds) in Maine


I’ve had a lot of fun working with CKSyncEngine over the last month or so. I truly think it’s one of the best APIs Apple has built, and they’ve managed to take…

Discover how Agent Skills replace duplicated AGENTS.md files with reusable AI knowledge that scales consistently across projects.

A deep dive into the practical challenges of implementing, testing, and maintaining Universal Links at scale

Swift 6 introduced a new feature called "Access level imports". With [SE-0409](https://github.com/swiftlang/swift-evolution/blob/main/proposals/0409-access-level-on-imports.md) you can attach access level modifiers to your import statements. In the p...

I’m Paulo. A software developer based in Lisbon, Portugal, founder of Outer Corner, currently building apps for Apple platforms.

Understand document-based apps with SwiftUI.

Greetings, traveler! SwiftUI makes it easy to react to text input. There are two common approaches to handle formatted text input: Use TextField format option Format the string inside onChange and then write the processed value back into the same binding…

It is possible with one line of code to switch back to the old-style tab bar at the bottom of the screen, even on iPadOS 26!

Architectural design patterns like VIPER might seem radically different from common ones like MVVM. However, upon deeper inspection, it turns out that these patterns share the same constitutive components. In this article, we will compare the MVVM and VIPER…

How switching from a get-only Binding to a let variable might not be as innocent as you think

SwiftData migrations are one of those things that feel optional… right until you ship an update and real users upgrade with real data on disk. In this post we’ll dig into: By the end of this post you…

Learn how AI agents and tools like Cursor have reshaped my workflow and brought new efficiencies to my app development process.

Comparing GPU single-texture uploads, vertical strip tiling, grid tiling, and the CPU fallback for huge equirectangular images.

While Swift 6.2's Default Actor Isolation simplifies concurrency, the compiler sometimes fails to infer closure execution contexts, leading to unexpected errors. This article explores a practical solution using @isolated(any) and the #isolation macro to achieve…

Xcode 26.3 introduces support for agentic coding, a new way in Xcode for developers to build apps, powered by coding agents from Anthropic and OpenAI.

Xcode 26.3 ships with 20 native MCP tools for AI agents. Learn how to use Xcode's DocumentationSearch, BuildProject, RenderPreview, and more from Cursor, Claude CLI, or any MCP client using the mcpbridge.