scala3-TupleMap.scala

// Adapted from:
// https://www.scala-lang.org/2021/02/26/tuples-bring-generic-programming-to-scala-3.html

// You might hope the following would work for Tuple.map:
scala> (1, 2.2, "three").map(x => Some(x))
1 |(1, 2.2, "three").map(x => Some(x))
  |                      ^^^^^^^^^^^^
  |                      Found:    Any => Some[Any]
  |                      Required: PolyFunction{apply: [t](x$1: t): Any}

// Ah, a PolyFunction is required! We know how to do that...
scala> (1, 2.2, "three").map([X] => (x:X) => Some(x))     // Note the additional "[X] =>"
val res10: Some[Int] *: Some[Double] *: Some[String] *:
  scala.Tuple.Map[scala.Tuple$package.EmptyTuple.type, Some] = (Some(1),Some(2.2),Some(three))

// Here it is again with the explicit type parameter passed to map:
scala> (1, 2.2, "three").map[[X] =>> Option[X]]([X] => (x:X) => Some(x))
val res9: Option[Int] *: Option[Double] *: Option[String] *:
  scala.Tuple.Map[scala.Tuple$package.EmptyTuple.type, Option] = (Some(1),Some(2.2),Some(three))