Number formatting in Scala?

Question

I have a dynamically changing input reading from a file. The numbers are either Int or Double. Why does Scala print .0 after every D

Answer 1

If you are working with a Double and want to format it as a String without .0 when it's a whole number and with its decimals otherwise, then you could use String::stripSuffix:

x.toString.stripSuffix(".0")
// val x: Double = 1.34    =>   "1.34"
// val x: Double = 1.0     =>   "1"