Checking if a double value is an integer - Swift

Question

I need to check if a double-defined variable is convertible to Int without losing its value. This doesn\'t work because they are of different types:

if self.         


        

Answer 1

How about converting the Double to an Int (which will cut off decimals), then back to a Double, then comparing this to the original Double? For example:

var dbl:Double = 22/3
dbl == Double(Int(dbl))
// false: dbl = 7.33333... Double(Int(dbl)) = 7.0

dbl = 25
dbl == Double(Int(dbl))
// true: dbl = 25.0, Double(Int(dbl)) = 25.0