TypeErasure.Kt

TypeErasure.kt

// Warning, this code won't  compile in Kotlin
// it has problemss. Can you spot which line won't compile?

fun main(args: Array<String>) {
  val mlist = listOf(Programmer("Ted"), Tester("Steph")) // (1)
  val mprogs = mlist.typeOf<Programmer>() // (2)

  mprogs.forEach { // (3)
    println("${it.toString()} : ${it.javaClass.simpleName}")
  }
}

fun <T> List<pass:[*]>.typeOf() : List<T> { // (4)

  val retlist = mutableListOf<T>() // (5)
  this.forEach {
    if (it is T) {  // (6)
      retlist.add(it) // (7)
    }
  }
  return retlist  // (8)
}

open class Employee(val name:String) {
  override fun toString(): String {
    return name
  }
}
class Programmer(name:String) : Employee(name) {}
class Tester(name:String) : Employee(name) {}