CODEWITHSUNDEEP
swiftnsnumberformatter
Michael Ozeryansky
Michael Ozeryansky

Reputation: 8033

How to format negative 0 with currency NumberFormatter

I noticed my app is displaying "-$0.00" for a value of -0. The simple form of the math is let balance: Double = -1 * value. I want my negative 0 values to just display as "$0.00". Is there a way to have the NumberFormatter properly handle this?

let formatter = NumberFormatter()
formatter.numberStyle = .currency

let d: Double = -1 * 0
formatter.string(from: d as NSNumber)! // -$0.00

Upvotes: 1

Views: 651

Answers (2)

Joakim Danielson
Joakim Danielson

Reputation: 51831

If you are working with money, currency etc it is much better to use Decimal than Double and it will also solve your problem here, change the declaration of d as below

let d: Decimal = -1 * 0

and the formatter will produce "$0.00"

Upvotes: 2

Michael Ozeryansky
Michael Ozeryansky

Reputation: 8033

My current approach is:

struct Formatter {

    static func currency(_ value: Double) -> String {
        let formatter = NumberFormatter()
        formatter.numberStyle = .currency
        let value = (value == 0) ? 0 : value // Convert -0 to 0
        return formatter.string(from: value as NSNumber) ?? ""
    }

}


Formatter.currency(-1 * 0) // $0.00

Upvotes: 0

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