Tupeの連結

gistfile1.scala

trait TupleOr {

  implicit def tuple1Or[A](t: (A, )) = new {
    def ++[B](o: (B, )) = (t._1, o._1)
    def ++[B, C](o: (B, C)) = (t._1, o._1, o._2)
    def ++[B, C, D](o: (B, C, D)) = (t._1, o._1, o._2, o._3)
    def ++[B, C, D, E](o: (B, C, D, E)) = (t._1, o._1, o._2, o._3, o._4)
    def ++[B, C, D, E, F](o: (B, C, D, E, F)) = (t._1, o._1, o._2, o._3, o._4, o._5)
    // ...
  }
  implicit def tuple2Or[A, B](t: Tuple2[A, B]) = new {
    def ++[C](o: (C, )) = (t._1, t._2, o._1)
    def ++[C, D](o: (C, D)) = (t._1, t._2, o._1, o._2)
    def ++[C, D, E](o: (C, D, E)) = (t._1, t._2, o._1, o._2, o._3)
    // ...
  }
  
}