问如何在解析时滑动删除要更新的表单元格？

EN

override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {


    if editingStyle == UITableViewCellEditingStyle.Delete {
        // Delete the row from the data source
        tableView.beginUpdates()
        usernames.removeAtIndex(indexPath.row)
        tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
        tableView.endUpdates()
    } else if editingStyle == .Insert {
        // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
    }    
}