How to Set UITableViewCellStyleSubtitle and dequeueReusableCell in Swift?

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Keep in mind that UITableView is defined as an optional in the function, which means your initial cell declaration needs to check for the optional in the property. Also, the returned queued cell is also optional, so ensure you make an optional cast to UITableViewCell. Afterwards, we can force unwrap because we know we have a cell.

var cell:UITableViewCell? = 
tableView?.dequeueReusableCellWithIdentifier(reuseIdentifier) as? UITableViewCell
if (cell == nil)
{
   cell = UITableViewCell(style: UITableViewCellStyle.Subtitle, 
                reuseIdentifier: reuseIdentifier)
}
// At this point, we definitely have a cell -- either dequeued or newly created,
// so let's force unwrap the optional into a UITableViewCell
cell!.detailTextLabel.text = "some text"

return cell

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