- Element: ∆A, Inputs: #[1,2,3,4,5#] *** FAILED ***
  vyxal.UnimplementedOverloadException: RuntimeException: ∆A not supported for input(s) [[ 1 | 2 | 3 | 4 | 5 ]]

case VListOf[VNum](numbers) => numbers.map(_.asInstanceOf[VNum]).sum /
          numbers.length

val matches = seq.forall {
      case tt(_) => true
      case _ => false
    }

addPart("∆A", Monad, false) {
      case VListOf[VNum](numbers) => numbers.map(_.asInstanceOf[VNum]).sum /
          numbers.length
      case a: VNum => a
      case VList(huh) =>
        println(huh.map(_.isInstanceOf[VNum]))
        5
    },

  case huh: VList =>
    println(VListOf.unapply[VNum](huh))

object VListOf:
  def unapply[T](seq: Seq[Any])(using tt: TypeTest[Any, T]): Option[Seq[T]] =
    val matches = seq.forall {
      case tt(_) => true
      case _ => false
    }
    Option.when(matches)(seq.asInstanceOf[Seq[T]])

[RubenVerg]
object VListOf:
  def unapply[T](seq: Seq[Any] | VList)(using tt: TypeTest[Any, T]): Option[Seq[T]] =
    val seq_ = seq match
      case VList(l) => l
      case s: Seq[Any] => s
    val matches = seq_.forall {
      case tt(_) => true
      case _ => false
    }
    Option.when(matches)(seq_.asInstanceOf[Seq[T]])