fun <T, R> mutableRandomAccess(vararg value: R): T where T : MutableList<R>, T : RandomAccess {
    val arr = ArrayList<R>(value.size)
    arr.addAll(value)
    return arr as T
}

fun main(args: Array<String>) {
    val ints: MutableList<Int> = mutableRandomAccess<ArrayList<Int>, Int>(1, 2, 3, 4)
    ints.forEach { println(it) }
}