UITableViewCell var “table view cell” was never mutated

问题

In swift 2.0 when I tried to make var object of UITableViewCell custom class, swift is suggesting me to convert it to "let" because object was never mutated.

I have a UIButton on UITableViewCell but it is renamed to ABC on touchupinside method call of the button if i make its object to "let"

Refer to following piece of code:

var nameCell: UITableViewCell = tableView.dequeueReusableCellWithIdentifier(nameCellIdentifier, forIndexPath: indexPath) 

switch indexpath.row{
case 0:
     nameCell.customButton.titleLabel!.text = "ABC"
case 1:
     nameCell.customButton.titleLabel!.text = "DEF"
case 2:
     nameCell.customButton.titleLabel!.text = "GHI"
}

return nameCell

result:

var nameCell was never mutated convert it to let

回答1:

Use

nameCell.customButton.setTitle("ABC", forState: .Normal)

instead of

nameCell.customButton.titleLabel!.text = "ABC"

and change var to let in

var nameCell: UITableViewCell = tableView.dequeueReusableCellWithIdentifier(nameCellIdentifier, forIndexPath: indexPath) 

来源：https://stackoverflow.com/questions/36887112/uitableviewcell-var-table-view-cell-was-never-mutated