我有一个实体,其中有 4 个字符串属性。我正在尝试将记录推送到实体中,但我在记录行中遇到“操作符后的预期表达式”错误。
guard
let appDelegate = UIApplication.shared.delegate as? AppDelegate
else {
return
}
let managedContext = appDelegate.persistentContainer.viewContext
//2
let entity = NSEntityDescription.entity(forEntityName: "Details",in: managedContext) !
//3
let record = NSManagedObject(entity: entity,insertInto: managedContext)