Type in expressions to have them evaluated.
Type :help for more information.

scala> 

scala> import scala.reflect.mirror._
import scala.reflect.mirror._

scala> {
  val x = "2"
  val tt = implicitly[TypeTag[x.type]]
  println(tt)
}
<console>:13: free term: Ident(newTermName("x")) defined by res0  in <console>:12:21
                val tt = implicitly[TypeTag[x.type]]
                                   ^
ConcreteTypeTag[x.type]

scala> 

scala>