Suspend functions to produce a random number.

kotlin-coroutines-stories-09-random-number-suspend-functions.kt

private suspend fun myRandomNumberSuccess(operation: String): Int = withContext(Dispatchers.Default) {
    log("$operation Retrieving random number...")
    delay(2000) //Simulating a heavy computation
    val random = (1..100).random()
    log("$operation Random Number = $random")
    random
}

private suspend fun myRandomNumberFail(operation: String): Int = withContext(Dispatchers.Default) {
    log("$operation Retrieving random number...")
    delay(1000) //Simulating a heavy computation
    throw IllegalStateException("$operation Retrieving random number failed.")
}