Reference
Comprehensive guides and documentation for Apple platform development. Reference skills provide detailed information without enforcing specific workflows.
Reference Skills
| Skill | Description |
|---|---|
| liquid-glass-ref | Comprehensive Liquid Glass adoption guide — app icons, controls, navigation, menus, windows, search, platform considerations |
| realm-migration-ref | Complete migration guide from Realm to SwiftData — pattern equivalents, threading models, schema strategies, CloudKit sync transition |
| network-framework-ref | Comprehensive Network.framework API reference — NWConnection (iOS 12-25), NetworkConnection (iOS 26+), TLV framing, Coder protocol, migration strategies |
| energy-ref | Complete energy optimization API reference — Power Profiler, timer/network/location efficiency, background execution, BGContinuedProcessingTask (iOS 26), MetricKit |
| core-location-ref | Modern Core Location APIs — CLLocationUpdate, CLMonitor, CLServiceSession (iOS 18+), geofencing, background location, authorization patterns |
| swiftui-26-ref | All iOS 26 SwiftUI features — Liquid Glass, @Animatable macro, WebView, rich text, 3D charts, spatial layout, scene bridging |
| swiftui-animation-ref | Complete SwiftUI animation reference — VectorArithmetic, Animatable protocol, @Animatable macro, springs vs timing curves, CustomAnimation, performance optimization (iOS 13-26) |
| app-discoverability | Complete discoverability strategy — 6-step framework combining App Intents, App Shortcuts, Core Spotlight, NSUserActivity for Spotlight and Siri |
| app-intents-ref | App Intents framework for Siri, Apple Intelligence, Shortcuts, Spotlight — AppIntent, AppEntity, parameters, queries, debugging |
| app-shortcuts-ref | App Shortcuts implementation guide — AppShortcutsProvider, suggested phrases, instant Siri/Spotlight availability, debugging |
| avfoundation-ref | AVFoundation audio APIs — AVAudioSession, AVAudioEngine, bit-perfect DAC output, iOS 26+ spatial audio capture, ASAF/APAC, Audio Mix |
| core-spotlight-ref | Core Spotlight indexing — CSSearchableItem, IndexedEntity, NSUserActivity integration, Spotlight search and prediction |
| foundation-models-ref | Apple Intelligence Foundation Models framework — LanguageModelSession, @Generable, streaming, tool calling, context management (iOS 26+) |
| haptics | Haptic feedback and Core Haptics — UIFeedbackGenerator, CHHapticEngine, AHAP patterns, Causality-Harmony-Utility design principles (WWDC 2021) |
| localization | App localization and i18n — String Catalogs (.xcstrings), type-safe symbols (Xcode 26+), #bundle macro, plurals, RTL layouts, locale-aware formatting |
| privacy-ux | Privacy manifests and permission UX — just-in-time permissions, App Tracking Transparency, Required Reason APIs, Privacy Nutrition Labels |
| swiftui-layout-ref | Complete SwiftUI adaptive layout API guide — ViewThatFits, AnyLayout, Layout protocol, onGeometryChange, size classes, iOS 26 window APIs |
| storage | Complete iOS storage decision framework — database vs files, local vs cloud, SwiftData/CloudKit/iCloud Drive selection |
| cloudkit-ref | Modern CloudKit sync — SwiftData integration, CKSyncEngine (WWDC 2023), database scopes, conflict resolution, monitoring |
| icloud-drive-ref | File-based iCloud sync — ubiquitous containers, NSFileCoordinator, conflict resolution, NSUbiquitousKeyValueStore |
| file-protection-ref | iOS file encryption and data protection — FileProtectionType levels, background access, Keychain comparison |
| storage-management-ref | Storage management and purge priorities — disk space APIs, backup exclusion, cache management, URL resource values |
| textkit-ref | TextKit 2 complete reference — architecture, migration from TextKit 1, Writing Tools integration, SwiftUI TextEditor support (iOS 26) |
| typography-ref | Apple platform typography — San Francisco fonts, text styles, Dynamic Type, tracking, leading, internationalization best practices |
Quality Standards
All reference skills are reviewed against 4 criteria:
- Accuracy — Every claim cited to official sources, code tested
- Completeness — 80%+ coverage, edge cases documented, troubleshooting sections
- Clarity — Examples first, scannable structure, jargon defined
- Practical Value — Copy-paste ready, expert checklists, real-world impact
Related Resources
- Diagnostic — Systematic diagnostics with mandatory workflows
- Skills — Discipline-enforcing TDD-tested workflows
- Commands — Quick automated scans
- WWDC 2025 Sessions