-scala: context bound example

ContextBoundExample.scala

object ContextBoundExample {

  def main(args: Array[String]) {

    class Identity[T] {
      def identity(t: T) = t
    }

    implicit val int_id = new Identity[Int]
    implicit val str_id = new Identity[String]

    def bar[T: Identity](t: T) = implicitly[Identity[T]].identity(t)

    println(bar(5))
    println(bar("abc"))

  }
}