Default.scala

trait Default[T] {
  @inline
  def default: T
}

object Default {
  implicit val intDefault: Default[Int] = apply(0)
  implicit val byteDefault: Default[Byte] = apply(0)
  implicit val shortDefault: Default[Short] = apply(0)
  implicit val longDefault: Default[Long] = apply(0L)
  implicit val floatDefault: Default[Float] = apply(0.0F)
  implicit val doubleDefault: Default[Double] = apply(0.0)
  implicit val booleanDefault: Default[Boolean] = apply(false)
  implicit def otherDefault[T <: AnyRef]: Default[T] =
    // Please not that this call does not rely on the current behaviour
    // of v.asInstanceOf[T] when v is null and T is an AnyVal instance.
    apply(null.asInstanceOf[T])

  @inline
  def of[T](implicit D: Default[T]): T = D.default

  @inline
  private def apply[T](t: T) = new Default[T] { def default = t }
}