class Person: ObservableObject, Codable { @Published var name = "" @Published var age = 0 enum CodingKeys: CodingKey { case name, age } init() { } required init(from decoder: Decoder) throws { let container = try decoder.container(keyedBy: CodingKeys.self) name = try container.decode(String.self, forKey: .name) age = try container.decode(Int.self, forKey: .age) } func encode(to encoder: Encoder) throws { var container = encoder.container(keyedBy: CodingKeys.self) try container.encode(name, forKey: .name) try container.encode(age, forKey: .age) } }