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Examples/UINote/SwiftUINote/Models/Note.swift

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+//
+//  Note.swift
+//  SwiftUINote
+//
+//  Created by chanju Jeon on 05/06/2019.
+//  Copyright © 2019 we'd. All rights reserved.
+//
+
+import SwiftUI
+
+struct Note: Hashable, Codable, Identifiable {
+    let id = UUID()
+    var text: String
+    var date = Date()
+}

Examples/UINote/SwiftUINote/Models/NoteData.swift

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+//
+//  NoteData.swift
+//  SwiftUINote
+//
+//  Created by chanju Jeon on 05/06/2019.
+//  Copyright © 2019 we'd. All rights reserved.
+//
+
+import SwiftUI
+
+class NoteData {
+    
+    static let shared = NoteData()
+    
+    var notes: [Note] = [
+        Note(text: "New Note"),
+        Note(text: "Another Note")
+    ]
+    
+    private init() { load() }
+    
+    static func dateToString(date: Date) -> String {
+        let formatter = DateFormatter()
+        formatter.dateStyle = .medium
+        return formatter.string(from: date)
+    }
+    
+    func save() {
+        UserDefaults.standard.set(try? PropertyListEncoder().encode(notes), forKey: "notes")
+        debugPrint("save called")
+    }
+    
+    func load() {
+        if let data = UserDefaults.standard.object(forKey: "notes") as? Data {
+            self.notes = try! PropertyListDecoder().decode([Note].self, from: data)
+        }
+    }
+}

Examples/UINote/SwiftUINote/Models/UserData.swift

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+//
+//  UserData.swift
+//  SwiftUINote
+//
+//  Created by chanju Jeon on 05/06/2019.
+//  Copyright © 2019 we'd. All rights reserved.
+//
+
+import SwiftUI
+import Combine
+
+final class UserData: BindableObject {
+    let didChange = PassthroughSubject<UserData, Never>()
+    
+    var notes = NoteData.shared.notes {
+        didSet {
+            didChange.send(self)
+            NoteData.shared.notes = notes
+        }
+    }
+}