▸case-10 Our SwiftUI app experiences main-thread hitching and memory growth when scrolling a large image feed. What primary Xcode developer tool should be used to profile memory allocations and frame drop origins? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-05 We need to host a complex legacy MKMapView subclass inside a SwiftUI view tree. Which protocol should be implemented to wrap this UIKit view object, and how should updates from SwiftUI binding changes be propagated to the underlying view? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-15 An app needs to execute periodic database cleanup and refresh news feeds while suspended in the background. Is DispatchQueue.global().asyncAfter sufficient when the app is terminated or suspended, or what system background API must be registered? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-17 We want to check if Face ID is available on the current user device before presenting a biometric login prompt. What system framework and context class provide device owner authentication evaluation? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-02 I need to refactor a complex legacy UIViewController dynamic list to modern SwiftUI while introducing local persistence using SwiftData. Please draft a complete implementation roadmap along with Swift code models, view architecture, and a checklist for validating data synchronization. | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-03 We have an asynchronous image processor module that runs background network fetches and processing. A junior developer suggested using traditional GCD dispatch queues with raw DispatchQueue.global().async calls mixed with mutable class instances across threads. Provide the modern Swift 6 recommended approach for thread-safe concurrent execution. | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-23 We are building an iOS settings screen and need a public UIKit API to toggle system-wide Dark Mode across the entire iPhone OS when the user flips a switch in our app. Which UIKit API controls global system appearance? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-01 We are upgrading our app security and need to implement Face ID and Touch ID login backed by Keychain credential storage. Please give me a structured technical guide including production-ready Swift snippets, proper error handling for authentication failures, and practical testing procedures. | fail→pass | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-12 Our food delivery app wants to display real-time order status updates in the Dynamic Island and Lock Screen while the app is backgrounded. Which platform framework should be integrated? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-04 We are designing a new feature screen in iOS 17+. The UI needs to react to model property changes. Should we model our view state using ObservableObject with @Published properties and @ObservedObject in the view, or is there a newer standard platform macro for state observation in modern SwiftUI? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-08 We are writing a network service for fetching JSON user profiles. Should we use completion handler callbacks with URLSession.shared.dataTask(with:completionHandler:) or modern Swift language features for asynchronous networking? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-18 In Swift 6, a domain module needs to strictly limit the error types thrown by a network function rather than throwing generic any Error. What language feature allows specifying exact error types in function signatures? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-14 Our team wants to automate beta app distribution and certificate signing directly within Apple's integrated cloud system without running third-party server infrastructure. What service handles this within the Apple developer ecosystem? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-09 We are preparing an iOS app build for submission that tracks user location in the background and collects analytics. What mandatory configuration entries must be placed in Info.plist before App Store review submission, and what framework handles tracking consent? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-16 When rendering dynamic text in SwiftUI, developer code frequently uses fixed font sizes like .font(.system(size: 16)). How should text fonts be configured so they automatically adapt when users change their accessibility system text size settings? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-11 We need to create a glanceable Lock Screen widget for an iOS 16+ fitness application. Which framework and timeline entry provider system must be built for this companion experience? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-22 We want our iOS background task to run continuous, unthrottled CPU calculations 24/7 without being suspended or scheduled by the system. How do we configure BGTaskScheduler to bypass iOS background execution timeouts? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-13 We are building an offline-first note-taking app that syncs user documents automatically across Apple devices without custom backend infrastructure. What Apple cloud framework seamlessly integrates with SwiftData or Core Data? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-20 We want to port our iPad app directly to macOS with minimal code changes so it runs natively on Apple Silicon and Intel Macs. What technology framework enables sharing the iPad codebase to create a Mac application? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-06 Our iOS app requires deep linking to arbitrary hierarchical screens. The team wants to use deprecated NavigationLink(destination:isActive:) calls across views. Recommend the modern iOS 16+ navigation container architecture that decouples navigation paths from view definitions. | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-07 An application needs to cache sensitive OAuth refresh tokens across app launches. A teammate suggested saving them directly into UserDefaults.standard with base64 encoding for security. What platform API should be used instead? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-19 We are structuring a new SwiftUI app and want to separate business logic and UI view state cleanly while keeping state updates reactive. Which architectural pattern combining @Observable models with SwiftUI views best aligns with standard platform practices? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |
▸case-21 We are developing an iOS companion app and need to programmatically read files directly from another third-party application's sandboxed Documents directory on an unrooted device. Which FileManager API provides cross-app sandbox read access? | fail→fail | — | — | — | — | — | — | — | — | — | — | — | — |