// Master state management in SwiftUI. Learn about @State, @Binding, @EnvironmentObject, @Observable, Environment values, and data flow patterns.
Swift 6's data-race safety is real, but it has blind spots. Here are the places the compiler can't see, and how to stop treating a clean build as proof your code is thread safe.
iOS 18 introduced public APIs for building custom container views that can decompose content into individual subviews. Learn how to use ForEach(subviews:), Group(subviews:), and ContainerValues.
Xcode can consume 50GB+ of disk space over time. Here's how to reclaim storage by clearing caches, old simulators, device support files, and other accumulated cruft.
Set up Claude Code to automatically keep your Mac awake during long tasks and let it sleep again when finished, using hooks and the caffeinate command.
The Xcode MCP server connection prompt interrupts your flow every time you restart Claude Code or clear your session. Here's how to automate it away using hooks.
Learn how to use Swift's @Observable macro introduced in iOS 17, understand its advantages over ObservableObject, and migrate your existing code to the modern observation system.
Learn how to create beautiful, interactive charts in SwiftUI using Apple's Swift Charts framework, from simple line charts to customized bar graphs.
Skip Expo Go and test your development build directly on a physical device using Bonjour for automatic network discovery.
When Metro won't start because port 8081 is already in use, you likely have an orphaned process. Here's how to find and kill it properly.
Compare @AppStorage, UserDefaults, and SwiftData for persisting data in Swift apps. Learn when each approach makes sense and how to use them effectively.
Claude Code can commit changes automatically while it works. Here's how to set that up using hooks, CLAUDE.md instructions, and the right permission configuration.
When SwiftUI previews break, the error messages aren't always helpful. Here's how to debug them, clear caches, and get back to a working state.
Vercel's Skills library lets you add reusable instruction sets to AI coding agents. Here's how to use it to make agents more effective for React Native development.
React Native projects require running lots of shell commands. Here's how to configure Claude Code's permission system so you're not constantly approving the same operations.
Xcode 26.3 ships with a built-in MCP server that exposes project structure, build actions, and test results to external AI tools. Here's how to set it up.
A practical guide to choosing between SwiftUI and UIKit in 2026, based on your project requirements, team experience, and the current state of both frameworks.
Actors provide compile-time safety for shared mutable state in Swift. Here's when to use them and how they compare to older approaches.
Avoid cryptic build failures by setting up nvm to automatically use the right Node version when you cd into a project.
Stop cluttering your Desktop with screenshots. Here's how to save them somewhere else using Terminal or the Screenshot app.
Stop macOS from littering .DS_Store files on network shares and USB drives with a simple Terminal command. Keep your external storage clean and your repositories tidy.
The glassEffectID modifier enables glass views to smoothly morph into one another during state changes, creating fluid transitions that feel native to iOS 26.
Learn how to use Xcode's Device Conditions feature to simulate thermal state and network conditions to test your app under real-world stress scenarios.
Understand the difference between @State and @Binding in SwiftUI, when to use each, and how they work together to manage data flow between views.
Learn different approaches for handling optional ObservableObject instances in SwiftUI, from conditional rendering to wrapper patterns.
Failable initializers offer a cleaner alternative to if-let statements when your SwiftUI views depend on optional data.
Learn how to detect app lifecycle changes in SwiftUI, save state when your app enters the background, and restore it when users return, using scenePhase and UIApplication notifications.
When building UIs that stream AI-generated content using Apple's Foundation Models framework, testing intermediate states in Xcode Previews requires some creative workarounds. Here's how to preview partially generated content without calling the actual model.
Learn how to access SwiftUI environment values in View extensions using ViewModifiers for clean, reusable code.
Learn how to prevent users from taking screenshots of sensitive content in your SwiftUI app using field-level security and UIKit bridging for financial, medical, or private data protection.
Learn how to dump all SwiftUI environment values for debugging purposes.
Learn how to implement undo/redo functionality in SwiftUI using UndoManager, including environment injection, registering actions, and creating undo buttons for professional editing experiences.
How to check available and total disk space on iOS devices using URL resource values.
Learn how to access and configure environment variables in Swift applications for configuration management, API keys, and feature toggles.
KVO lets you observe property changes without delegation or notifications. Here's how it works under the hood and how to use it correctly.
Discover how the Objective-C runtime secretly stores small strings directly in pointer values, eliminating heap allocations entirely.