Ah, duh, ok next iteration: ``` @Suppress("UNCHECK...

# stdlib

[rocketraman]

Ah, duh, ok next iteration:

@Suppress("UNCHECKED_CAST")
fun <R> Iterable<*>.filterIsInstanceIndexed(clazz: Class<R>): List<IndexedValue<R>> =
  withIndex().filter { clazz.isInstance(it.value) } as List<IndexedValue<R>>