How I can print Double with 2 digit after point and hide if they are zero?

Question

5.12345 -> 5.12
5.00000 -> 5
5.10000 -> 5.10

Please try my answer. If it meets your expectations , remark as accepted. Thanks — Ali Ihsan URAL, Oct 01 '18 at 13:18
https://stackoverflow.com/questions/48334494/swift-formatting-string-to-have-2-decimal-numbers-if-it-is-not-a-whole-number — Leo Dabus, Oct 01 '18 at 13:42

score 4 · Accepted Answer · answered Oct 01 '18 at 13:28

4

You could try this

func format(_ x: Double) -> String {
    if Double(Int(x)) == x {
        return String(Int(x))
    } else {
        let numberFormatter = NumberFormatter()
        numberFormatter.maximumFractionDigits = 2
        numberFormatter.minimumFractionDigits = 2
        guard let s = numberFormatter.string(for: x) else {
            fatalError("Couldn't format number")
        }
        return s
    }
}

format(5.12)  //"5.12"
format(5.0)   //"5"
format(5.10)  //"5.10"

answered Oct 01 '18 at 13:28

ielyamani

17,807
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this will create a new number formatter every time you call this method. – Leo Dabus Oct 01 '18 at 13:31
@LeoDabus yes I do remember that from last time – ielyamani Oct 01 '18 at 13:32
numberFormatter.minimumFractionDigits = 0, right? – Aleksandr Maybach Oct 01 '18 at 13:40
@AleksandrMaybach No it's not. See the question: "*5.10000 -> 5.10*" – ielyamani Oct 01 '18 at 13:41

How I can print Double with 2 digit after point and hide if they are zero?

1 Answers1