gistfile1.txt

extension String
{
    ///:returns: The floating-point value of the string as a double.
    func toDouble() -> Double
    {
        let convertedString = self as NSString
        return convertedString.doubleValue
    }

    ///:returns: The NSInteger value of the string.
    func toInteger()-> Int
    {
        let convertedString = self as NSString
        return convertedString.integerValue
    }
}

extension Double
{
    ///:returns: The the US Dollars representation of the double rounded to the nearest hundreth, as a String (i.e. $7.45)
    func toCurrency() ->String
    {
        let convertedString = NSString(format: "$%.2f", self)
        return convertedString
    }
}