// FULL_JDK
fun testPlus() {
    val x = 1 + 2
    val y = 3.0 + 4.0
    val z = 5 + 6.0
    val w = 7.0 + 8
    val c = 'a' + 1
    val s = "." + ".."
    val ss = "" + 1
    val list = listOf(1, 2, 3) + 4
    val listAndList = listOf(4, 5, 6) + listOf(7, 8)
    val mutableList = mutableListOf(9, 10) + listOf(11, 12, 13)
    val setAndList = setOf(0) + listOf(1, 2)
    val stringAndList = "" + emptyList<Boolean>()
    val map = mapOf("" to 1, "." to 2) + (".." to 3)
    val mapAndMap = mapOf("-" to 4) + mapOf("_" to 5)
}

fun <T> id(arg: T): T = arg

fun testMap() {
    val first = listOf(1, 2, 3).map { it * 2 }
    val second = intArrayOf(4, 5, 6).map { it * 2 }
    val withId = listOf(1, 2, 3).map { id(it) }
    val stringToInt = listOf("alpha", "omega").map { it.length }
    val viaWith = with(listOf(42)) {
        map { it * it }
    }
}

fun testWith() {
    val length = with("") { length }
    val indices = with("") { indices }
    val indicesNoWith = "".indices
}