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

BECAREFUL.

truncatingRemainder(dividingBy:) can be tricky. See below:

Swift 4:

//case 1
let reminder = (4.1 * 100).truncatingRemainder(dividingBy: 1.0)

//case 2
let reminder2 = (410).truncatingRemainder(dividingBy: 1.0)

// reminder = 0.9999999999999432
// reminder2 = 0