Scala Generic Test

class GenericTest extends App{

  defaultParamFunc(2,3){(x:Int, y:Int) => x*y }

  trait MyMagnet[B] extends ((B,B) => B)
  object MyMagnet {
    implicit def fromFunc[B]( f: (B, B) => B ) = new MyMagnet[B] {
      def apply(z: B, y: B): B = {
        val ans = f(z,y)
        println("ans : " + ans)
        ans
      }
    }
    implicit def fromUnit[B](unit: Unit)(implicit num: Numeric[B]) = new MyMagnet[B]{
      import num._
      def apply(v1: B, v2: B): B = { v1 + v2 }
    }
  }
  def defaultParamFunc[B](z: B, y: B)(magnet: MyMagnet[B]): B = magnet(z, y)
}