Anyone knows a proper way to make this compile (wi...

# announcements

[antonkeks]

Anyone knows a proper way to make this compile (without unsafe casting)?

fun <T: Any> register(c: KClass<T>, i: T) {}

fun main() {
  listOf(ArrayList::class, LinkedList::class).forEach { // any different classes here
    register(it, it.createInstance())
  }
}

[nikolaymetchev]

fun register(c: KClass<*>, i: Any) {}

fun main() {
listOf(ArrayList::class, LinkedList::class).forEach {
register(it, it.createInstance())
}
}

[nikolaymetchev]

Or even better:

[nikolaymetchev]

fun register(i: Any) {
val c = i.javaClass.kotlin
}

fun main() {
listOf(ArrayList::class, LinkedList::class).forEach {
register(it.createInstance())
}
}

[antonkeks]

Thanks for ideas! The example is actually from the Jooby framework, services.put() method that is implemented in Java and I was wondering, why can't I call it from Kotlin 🙂

[antonkeks]

Meaning that I can't change the signature of the method

[antonkeks]

The same problem is with this code:

data class User(val name: String)
val user = User("Hello")
  println(user::class.memberProperties.first().get(user))