Hands-On Design Patterns with Kotlin

CountDownLatch

We could pass them the latch, of course. The latch, which we've already seen a couple of times, allows one thread to wait until the other threads have completed working:

private fun getName(latch: CountDownLatch) = launch {    ...    latch.countDown()}

But it's not a clear separation of concerns. Do we really want to specify how this function should be synchronized?

Let's have a second take:

private fun getName() = async {    delay(Random().nextInt(100))    println("Got name")    "Inigo Montoya"}private fun getCatchphrase() = async {    delay(Random().nextInt(100))    println("Got catchphrase")    "Hello. My name is Inigo Montoya. You killed my father. Prepare to die."}private fun getRepeats() = async {    delay(Random().nextInt(100))    println("Got repeats" ...