coroutines

Introduction#

Examples of Kotlin’s experimental(yet) implementation of coroutines

Simple coroutine which delay’s 1 second but not blocks

(from official doc)

fun main(args: Array<String>) {
    launch(CommonPool) { // create new coroutine in common thread pool
        delay(1000L) // non-blocking delay for 1 second (default time unit is ms)
        println("World!") // print after delay
    }
    println("Hello,") // main function continues while coroutine is delayed
    Thread.sleep(2000L) // block main thread for 2 seconds to keep JVM alive
}

result

Hello,
World!