Swift Playground Ipad Saving input data and restore when needed - ipad

Question

Below codes works on Ipad playground, but I want to save input data and later retrieve it. For example the following inputs:
let xGuardtar = askForNumber()
let irpf = askForDecimal()
let brutox = bruto as NSNumber
The other problem is that it should be placed at the end of the code, but what to do, when i would like to retrieve it when the app is opened, and a file exists!!, it will wait until all inputs are gathered again....ps don’t want to use a button.
Looked everywhere but found nothing....thanks in advance (> swift 4)
Code that works:
// Additional save data
struct Note: Codable {
let title: String
let text: String
let timestamp: Date
}
let note1 = Note(title: "Note One", text: "This is a sample note.", timestamp: Date())
let note2 = Note(title: "Note Two", text: "This is another sample note.", timestamp: Date())
let note3 = Note(title: "Note Three", text: "This is yet another sample note.", timestamp: Date())
let notes = [note1, note2, note3]
let documentsDirectory = FileManager.default.urls(for: .documentDirectory,in: .userDomainMask).first!
let archiveURL = documentsDirectory.appendingPathComponent("notes_test").appendingPathExten. . sion("plist")
let propertyListEncoder = PropertyListEncoder()
let encodedNotes = try? propertyListEncoder.encode(notes)
try? encodedNotes?.write(to: archiveURL,options: .noFileProtection)
// Comments retrieve data
let propertyListDecoder = PropertyListDecoder()
if let retrievedNotesData = try? Data(contentsOf: archiveURL),
let decodedNotes = try?
propertyListDecoder.decode(Array<Note>.self, from:
retrievedNotesData) {
print(decodedNotes)
}