안전성서한,공지사항,보도자료,Q&A게시판

• 안전성서한
• 공지사항
• 보도자료

func toggleCompletion(_ task: TaskItem) task.isCompleted.toggle() save()

| 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

func fetchTasks() let request: NSFetchRequest<TaskItem> = TaskItem.fetchRequest() request.sortDescriptors = [NSSortDescriptor(keyPath: \TaskItem.creationDate, ascending: false)] do tasks = try context.fetch(request) catch print("Fetch error: \(error.localizedDescription)")

var body: some View NavigationView List(selection: $viewModel.selection) ForEach(viewModel.tasks) task in TaskRow(task: task, toggleAction: viewModel.toggleCompletion(task) ) .onDelete(perform: viewModel.delete) .navigationTitle("My Tasks") .toolbar ToolbarItem(placement: .navigationBarLeading) EditButton() ToolbarItem(placement: .navigationBarTrailing) Button(action: viewModel.showAddTaskSheet = true ) Image(systemName: "plus") // Bulk actions appear only when editing if editMode?.wrappedValue == .active ToolbarItemGroup(placement: .bottomBar) Button("Complete") viewModel.markSelectedAsCompleted() Spacer() Button("Delete", role: .destructive) viewModel.deleteSelected() .sheet(isPresented: $viewModel.showAddTaskSheet) AddTaskView title, due in viewModel.addTask(title: title, dueDate: due)

struct TaskListView: View @StateObject private var viewModel = TaskListViewModel() @Environment(\.editMode) private var editMode

// MARK: - CRUD wrappers

// MARK: - Helper CRUD

func addTask(title: String, dueDate: Date? = nil) PersistenceController.shared.addTask(title: title, dueDate: dueDate)

VStack(alignment: .leading) Text(task.title ?? "") .strikethrough(task.isCompleted, color: .gray) if let due = task.dueDate Text("Due: \(due, formatter: dateFormatter)") .font(.caption) .foregroundColor(.secondary)

final class PersistenceController static let shared = PersistenceController()