How can I match classes in a Scala “match” statement?

Question

How can I use a \"match\" statement to identify the value of a class variable? The following is invalid, and I can\'t find an acceptable variant -- other than if ... else i

Answer 1

The verbose case comparison works:

val what = c match {
  case q if q == classOf[Int] => "int!"
  case q if q == classOf[Float] => "float!"
}

Of course, being a lower-case identifier, classOf should not work directly in a case statement anyway. However, neither does an escaped

case `classOf`[Int]

work in this case, so you’ll have to go with the if-guard.