Param

A typeclass representing P-typed elements, eligible as parameters for stack configuration. Note that the typeclass instance itself is used as the key in parameter maps; thus typeclasses should be persistent:

case class Multiplier(i: Int) {
  def mk(): (Multipler, Stack.Param[Multipler]) =
    (this, Multiplier.param)
}
object Multiplier {
  implicit val param = Stack.Param(Multiplier(123))
}

The mk() function together with Parameterized.configured provides a convenient Java interface.