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  1. object Main extends Application {
  2.     implicit def safeCast[X,Y, _ >: X <: Y]( x:X ):Y = x.asInstanceOf[Y]
  3.     case class L[X](val x: X) { def double[_ >: X <: Int] = x.asInstanceOf[Int]*2 }
  4.  
  5.     override def main(args: Array[String]) = {
  6.         println(L(42).double)
  7.     }
  8. }
Success #stdin #stdout 0.27s 247552KB
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stdout 
84
https://ideone.com/MlYeRN
language:
Scala (scala 2.12.8)
created:
12 years ago
visibility:
public

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