Merge 2 tuples in Scala 2-CodePudding

Are there any ways to merge two tuples in Scala 2 that is equivalenet to in Scala 3 Tuple - Scala3

I can do this to concatenate two tuples in Scala 3:

val tup1 = (1, 2)
val tup2 = ("a", 6)
val tup3 = tup1    tup2

How can I do this in Scala 2

CodePudding user response：

You can add an extension method to Tuple2

implicit class Tuple2Ops[A0, A1](val tup: Tuple2[A0, A1]) extends AnyVal {
  def    [A2, A3](tup: Tuple2[A2, A3]): Tuple4[A0, A1, A2, A3] =
    (this.tup._1, this.tup._2, tup._1, tup._2)
}

(1, 2)    (3, 4) // (1, 2, 3, 4)

CodePudding user response：

You can do this with a generic programming library like Shapeless:

import shapeless.syntax.std.tuple._

object Main extends App {
  val tup = (1, "Two")    (3.0, "4", true)
  println(tup) //(1,Two,3.0,4,true)
}