import UIKit // これはちゃんとimportしておく import CoreData class ViewController: UIViewController { // TextFieldを用意 var memoField: UITextField! // メモと日時を入れる配列を用意 var memos: [NSString] = [] var dates: [NSDate] = [] override func viewDidLoad() { super.viewDidLoad() // text field memoField = UITextField(frame: CGRectMake(100, 100, 200, 30)) memoField.borderStyle = UITextBorderStyle.RoundedRect self.view.addSu