SwipeToDelete.swift

func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
 if editingStyle == .delete {
   let task = tasks[indexPath.row]
   context.delete(task)
   (UIApplication.shared.delegate as! AppDelegate).saveContext()
   
   do {
     tasks = try context.fetch(Task.fetchRequest())
   } catch {
     print("Fetching Failed")
   }
 }
  tableView.reloadData()
}