Deep dives into Swift, SwiftUI, AppKit, persistence, and the macOS internals behind mq-dir.
When the user picks a folder, you get permission. When they relaunch your app, you don't — unless you used a security-scoped bookmark. Here's everything that breaks if you didn't.
Adding a field to a Codable struct in Swift looks innocent. Done wrong, it eats your users' state. Here are five patterns that handle every kind of schema change cleanly.
Apple turned `SWIFT_STRICT_CONCURRENCY: complete` from optional to default for new projects. Here's what that breaks, what it catches, and the patterns that survive the upgrade.