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I'm just starting to learn Swift and I'm using the "Using Stacks to Create Views" learning module and I'm stuck in section 2 (Compose views) step 1 and the problem that I am having is that the code that is on the right hand section of the learning module is not the same code that I have in my Xcode contentview.swift in the ScrumdingerApp project. https://developer.apple.com/tutorials/app-dev-training/using-stacks-to-arrange-views I'm kind of embarassed as I should be zipping right through this part.. The code in the lesson module is like this - import SwiftUI struct ContentView: View { var body: some View { VStack { Image(systemName: "globe") .imageScale(.large) .foregroundColor(.accentColor) Text("Hello, world!") } .padding() } } struct ContentView_Previews: PreviewProvider { static var previews: some View { ContentView() } } and the code in my Scrumdinger contentview.swift is much longer and looks like this - this is what I downloaded>> // // ContentView.swift // Scrumdinger // // Created by Chet Shannon on 10/22/23. // import SwiftUI import CoreData struct ContentView: View { @Environment(.managedObjectContext) private var viewContext @FetchRequest( sortDescriptors: [NSSortDescriptor(keyPath: \Item.timestamp, ascending: true)], animation: .default) private var items: FetchedResults<Item> var body: some View { NavigationView { List { ForEach(items) { item in NavigationLink { Text("Item at \(item.timestamp!, formatter: itemFormatter)") } label: { Text(item.timestamp!, formatter: itemFormatter) } } .onDelete(perform: deleteItems) } .toolbar { ToolbarItem(placement: .navigationBarTrailing) { EditButton() } ToolbarItem { Button(action: addItem) { Label("Add Item", systemImage: "plus") } } } Text("Select an item") } } private func addItem() { withAnimation { let newItem = Item(context: viewContext) newItem.timestamp = Date() do { try viewContext.save() } catch { // Replace this implementation with code to handle the error appropriately. // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. let nsError = error as NSError fatalError("Unresolved error \(nsError), \(nsError.userInfo)") } } } private func deleteItems(offsets: IndexSet) { withAnimation { offsets.map { items[$0] }.forEach(viewContext.delete) do { try viewContext.save() } catch { // Replace this implementation with code to handle the error appropriately. // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. let nsError = error as NSError fatalError("Unresolved error \(nsError), \(nsError.userInfo)") } } } } private let itemFormatter: DateFormatter = { let formatter = DateFormatter() formatter.dateStyle = .short formatter.timeStyle = .medium return formatter }() #Preview { ContentView().environment(.managedObjectContext, PersistenceController.preview.container.viewContext) }