ios swift proper float to string conversion

Question

So in Obj-c this would be done differently, but I was wondering if anyone had any idea how to do this in swift? I feel embarrased having to ask this, but simply cannot find any documentation on it, how do I convert a float to string?

override func viewDidLoad() {
    super.viewDidLoad()

    var userScore = receivePlayerCard?.playerScore

    var convertUserScoreToString: Float

    scoreNameLabel.text = convertUserScoreToString //need to convert it to a string here
    scoreNameLabel.textColor = UIColor.whiteColor()
    // Do any additional setup after loading the view.
}

possible duplicate of [Convert float value to String in Swift](http://stackoverflow.com/questions/24123312/convert-float-value-to-string-in-swift) — Cezar, Jun 23 '14 at 03:48

score 7 · Accepted Answer · answered Jun 23 '14 at 01:39

7

You'd do it like this:

scoreNameLabel.text = "\(convertUserScoreToString)"

String Interpolation

answered Jun 23 '14 at 01:39

Connor Pearson

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Wouldn't you want to specify a format string, too? Floats look very weird sometimes. – Thilo Jun 23 '14 at 01:40
@Thilo There are ways of doing with that with NSString, but not with a Swift string as far as I know: http://stackoverflow.com/a/24052540/754604 This works for simple interpolation though – Connor Pearson Jun 23 '14 at 01:44
@Thilo see http://stackoverflow.com/questions/24051314/precision-string-format-specifier-in-swift – Jack Jun 23 '14 at 01:56

score 2 · Answer 2 · answered Jun 23 '14 at 01:53

We can use format strings with Swift's String type, thanks to Obj-C bridging!

So for example:

override func viewDidLoad() {
    super.viewDidLoad()

    let userScore: Double = receivePlayerCard?.playerScore

    scoreNameLabel.text = String(format: "%.2f", userScore)

    // Do any additional setup after loading the view.
}

ios swift proper float to string conversion

2 Answers2