Swift To-do List 11 Crack -

private func save() do try container.viewContext.save() catch // In production you’d present an alert / log let nsError = error as NSError fatalError("Core Data save error: \(nsError), \(nsError.userInfo)")

func deleteSelected() let toDelete = tasks.filter selection.contains($0.id ?? UUID()) toDelete.forEach PersistenceController.shared.delete($0) selection.removeAll()

var body: some View HStack Image(systemName: task.isCompleted ? "checkmark.circle.fill" : "circle") .foregroundColor(task.isCompleted ? .green : .secondary) .onTapGesture(perform: toggleAction) swift to-do list 11 crack

final class TaskListViewModel: ObservableObject @Published var tasks: [TaskItem] = [] @Published var showAddTaskSheet = false @Published var selection = Set<UUID>() // For multi‑selection

init(context: NSManagedObjectContext = PersistenceController.shared.container.viewContext) self.context = context fetchTasks() // Observe Core Data changes automatically (optional) NotificationCenter.default.publisher(for: .NSManagedObjectContextObjectsDidChange, object: context) .sink [weak self] _ in self?.fetchTasks() .store(in: &cancellables) private func save() do try container

The PersistenceController is the single source of truth for the data layer. Episode 11 often adds a deleteAllCompleted() helper for bulk‑operations. import SwiftUI import Combine

func addTask(title: String, dueDate: Date? = nil) let task = TaskItem(context: container.viewContext) task.id = UUID() task.title = title task.isCompleted = false task.creationDate = Date() task.dueDate = dueDate save() = nil) let task = TaskItem(context: container

func delete(at offsets: IndexSet) offsets.map tasks[$0] .forEach PersistenceController.shared.delete($0)

| Concept | Why It Matters | Quick Reference | |---------|----------------|-----------------| | Core Data + SwiftUI | Persistent, queryable storage that scales to many items. | @FetchRequest can be used instead of a manual view‑model fetch; the manual approach offers more control for bulk edits. | | Edit Mode & Multi‑Selection | Enables power‑user actions (batch delete, batch complete). | List(selection:) + EditButton + ToolbarItemGroup (shown only when editMode == .active ). | | MVVM Separation | Keeps UI code clean and testable. | View‑model holds all Core Data calls; Views are purely declarative. | | Date Formatting | Consistent user‑friendly dates. | DateFormatter static property or .formatted(date: .abbreviated, time: .omitted) . | | Accessibility | VoiceOver, dynamic type support. | Use system symbols, provide accessibilityLabel for check‑boxes. | | Testing | Unit‑test view‑model logic, UI‑test bulk actions. | Mock PersistenceController or inject an in‑memory context. | 7. Optional Enhancements (Post‑Episode 11) | Feature | Brief Implementation Idea | |---------|----------------------------| | Search Bar | Add a @State private var searchText = "" and filter tasks in the view‑model. | | Sorting & Filtering | Provide a `Picker