How to convert double to int in swift

Question

So I\'m trying to figure out how I can get my program to lose the .0 after an integer when I don\'t need the any decimal places.

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Answer 1

Swift 4 - Xcode 10

Use this code to avoid a crash if the double value exceeds the int boundaries (and so isn't representable):

Add this private extension to your class:

private extension Int {

    init?(doubleVal: Double) {
        guard (doubleVal <= Double(Int.max).nextDown) && (doubleVal >= Double(Int.min).nextUp) else {
        return nil
    }

    self.init(doubleVal)
}

Use the extension in your class this way:

func test() {

    let d = Double(123.564)
    guard let intVal = Int(doubleVal: d) else {
        print("cannot be converted")
    }

    print("converted: \(intVal)")
}