This decompiles as ``` List listOfDouble = Co...

# announcements

[mbonnin]

This decompiles as

List listOfDouble = CollectionsKt.listOf(1.0D);
      if (listOfDouble == null) {
         throw new TypeCastException("null cannot be cast to non-null type kotlin.collections.List<kotlin.Int>");
      } else {
         int first = ((Number)listOfDouble.get(0)).intValue();
         System.out.println("first=" + first + " (" + Integer.TYPE.getName() + ')');
      }

[phldavies]

So the reason the cast is not failing is due to the unboxing?

[mbonnin]

No idea. From my understanding, a conversion from Double to Int is made which is different from a cast

[mbonnin]

A cast would have most likely failed

[mbonnin]

But really not sure what's happening

[phldavies]

I think it's attempting to do a conversion from Integer to int but through a cast to the Number superclass to invoke the intValue() method. Because of this it's actually casting the boxed Double value to Number (which succeeds) instead of the expected cast of the Double to Integer which would fail

[Dico]

The conversion from boxed Int to Int is identical to the conversion from boxed Double to Int because it uses Number superclass.

[Dico]

Ok what Phil said

[mbonnin]

I see. That feels weird though

[Dico]

Weird things can happen when you cast generic type parameters. It's not advisable.