스위프트에서 세자리마다 쉼표찍기( Show comma on every 3 digit in swift -Number formatting)

//: Playground - noun: a place where people can play

import UIKit

func convertCurrency( money : NSNumber, style : NSNumberFormatterStyle ) -> String {

    

    let numberFormatter = NSNumberFormatter()

    numberFormatter.numberStyle = style

    

    return numberFormatter.stringFromNumber( money )!

}

let value = 12345678.123

convertCurrency(value, style : NSNumberFormatterStyle.DecimalStyle)

convertCurrency(value, style : NSNumberFormatterStyle.NoStyle)

convertCurrency(value, style : NSNumberFormatterStyle.CurrencyStyle)

#=========== Output  ===================

12,345,678.123     <-- decimalstyle="" font="">

12345678             <-- font="" nostyle="">

$12,345,678.12     <-- currencystyle="" font="">