Script to generate join function for Scala Futures

generateJoin.scala

val types = {
  for {
    end <- 'B' to 'V' // v = 22
    types = 'A' to end
  } yield types
}

types.foreach { types =>
  def typeToArgument(T: Char) = s"f${T.toLower}: Future[$T]"
  def typeToForArgument(T: Char) = s"$T <- f$T".toLowerCase

  val typeParameter = types.mkString(", ")
  val arguments = types.map(typeToArgument).mkString(", ")
  val forList = types.map(typeToForArgument).mkString("; ")
  val yieldList = types.mkString(", ").toLowerCase

  val function = s"def join[$typeParameter]($arguments)(implicit executor: ExecutionContext): Future[($typeParameter)] = for($forList) yield ($yieldList)"  
  
  println(function)
}