scala - How to pattern-match against every numeric class in one case?

Question

Suppose I have

def foo(x: Any) = x match {
  case s: String => println(0)
  case i: Int => println(1)
  case l: Long => println(2)
  //...
}

Is there any way to make something like the following?

def foo(x: Any) = x match {
  case s: String => println(0)
  case i: Numeric => println("Numeric")
}

Answer 1

You could match against the Number interface:

def foo(x: Any) = x match {
  case s: String => println(0)
  case i: java.lang.Number => println("Numeric")
}