Scala example source code file (t3866.scala)

This example Scala source code file (t3866.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

a, b, implicitrepeated, list, list, n, nothing, r, r, string, t, t, x, x

The Scala t3866.scala source code

abstract class ImplicitRepeated {
  trait T[+A, +B]
  trait X

  def f[N, R <: List[_]](elems: T[N, R]*)                // alternative a)
  def f[N, R <: List[_]](props: String, elems: T[N, R]*) // alternative b)

  // the following implicit causes "cannot be applied" errors
  implicit def xToRight(r: X): T[Nothing, X] = null
  implicit def anyToN[N](x: N): T[N, Nothing] = null


  f("A", 1, 2) // should be implicitly resolved to alternative b)
  f( 1, 2 )    // should be implicitly resolved to alternative a)
    // ImplicitRepeated.this.f[Int, Nothing]("A", ImplicitRepeated.this.anyToN[Int](1), ImplicitRepeated.this.anyToN[Int](2));
    // ImplicitRepeated.this.f[Int, Nothing](ImplicitRepeated.this.anyToN[Int](1), ImplicitRepeated.this.anyToN[Int](2))  
}