Elvis operator

Elvis.scala

object Ternary {
  implicit def coalescingOperator[T](pred: T) = new {
    def ??[A >: T](alt: =>A) = if (pred == null) alt else pred
  }
  
  implicit def elvisOperator[T](alt: =>T) = new {
    def ?:[A >: T](pred: A) = if (pred == null) alt else pred
  }
}