CODEWITHSUNDEEP
swiftstringswift3
user2789451
user2789451

Reputation:

Formatting a negative Double into currency in Swift

I want to format a Double value such as -24.5 into a currency formatted string like -$24.50. How would I do that in Swift?

I followed this post, but it ends up formatting as $-24.50 (negative sign after the $), which is not what I want.

Is there a more elegant solution to achieve this, besides something like this?

if value < 0 {
    return String(format: "-$%.02f", -value)
} else {
    return String(format: "$%.02f", value)
}

Upvotes: 0

Views: 2830

Answers (1)

Alexander
Alexander

Reputation: 63274

Use NumberFormatter:

import Foundation

extension Double {
    var formattedAsLocalCurrency: String {
        let currencyFormatter = NumberFormatter()
        currencyFormatter.usesGroupingSeparator = true
        currencyFormatter.numberStyle = .currency
        currencyFormatter.locale = Locale.current
        return currencyFormatter.string(from: NSNumber(value: self))!
    }
}

print(0.01.formattedAsLocalCurrency) // => $0.01
print(0.12.formattedAsLocalCurrency) // => $0.12
print(1.23.formattedAsLocalCurrency) // => $1.23
print(12.34.formattedAsLocalCurrency) // => $12.34
print(123.45.formattedAsLocalCurrency) // => $123.45
print(1234.56.formattedAsLocalCurrency) // => $1,234.56
print((-1234.56).formattedAsLocalCurrency) // => -$1,234.56

Upvotes: 4

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