Testing if a Decimal is a whole number in Swift

Question

Using Swift 3.

I am finding a lot of strange solutions online for checking if a Decimal object is a whole number. Everything feels far more complicated then it needs

Answer 1

I'm not sure can works in all cases but that maybe a more coincise option

extension Decimal {

    static var decimalSeparator: String { return NumberFormatter().decimalSeparator }

    var isFraction: Bool {
        return self.description.contains(Decimal.decimalSeparator)
    }

    var isWhole: Bool {
        return !isFraction
    }

}