Learning Concurrency in Kotlin

Labels

To better understand this, let's include a label where the execution starts, and also on each of the places were the execution can be resumed:

suspend fun getUserSummary(id: Int): UserSummary {    // label 0 -> first execution    logger.log("fetching summary of $id")    val profile = fetchProfile(id)        // label 1 -> resuming    val age = calculateAge(profile.dateOfBirth)    val terms = validateTerms(profile.country, age)        // label 2 -> resuming    return UserSummary(profile, age, terms)}

Now, let's pretend that we can somehow receive the label that indicates which part of the code to execute. Then, we could write a when statement to separate the code to be executed:

when(label) {    0 -> { // Label 0 -> first execution        logger.log("fetching summary of