async/await

Coroutines.kt

fun add(a: Int, b: Int): Int {
    return a + b
}

fun main() {
    runBlocking {
        println("Start main")

        val sumOf2 = async {
            println("Start sumOf2")
            add(2, 2)
        }
        val sumOf3 = async {
            println("Start sumOf3")
            add(3, 3)
        }
        println("Awaiting the sums")
        val total = sumOf2.await() + sumOf3.await()
        println("Total is $total")

        println("End main")
    }
}