Scala: obtain ClassTag from TypeTag

TypeTag2ClassTag.scala

import reflect.runtime.universe._
import reflect.ClassTag

def typeTag2ClassTag[T: TypeTag]: ClassTag[T] = {
  ClassTag[T]( typeTag[T].mirror.runtimeClass( typeTag[T].tpe ) )
}

class Example {

  /** This example is not meant to do anything useful, just demonstrate the syntax */
  def example[T : Typetag](data: Any): T= {
    implicit val tag: ClassTag[T] = typeTag2ClassTag[T] 
    tag.runtimeClass switch { // you need stable identifiers here
      case String_ => data.asInstanceOf[T]
      case Int_ => data.asInstanceOf[T]
      case Long_ => data.asInstanceOf[T]
    }
  }
}
object Example {
  // declares stable identifiers
  val String_ = classOf[String]
  val Int_    = classOf[Int]
  val Long_   = classOf[Long]
}