[Readable Code Practice] tableView Cell slide and delete

    func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCell.EditingStyle, forRowAt indexPath: IndexPath) {
        guard editingStyle == .delete else {return}
        
        datas.remove(at: indexPath.row)
        tableView.deleteRows(at: [indexPath], with: .left)
        
        }