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

Starting with Scala 2.10 you can use the f interpolator:

scala> val x: Double = 1
x: Double = 1.0

scala> println(f"$x%.0f")
1

scala> val i = 1
i: Int = 1

scala> println(f"$i%.0f")
1