Learning Concurrency in Kotlin

Incrementing the label

But, currently, we aren't actually incrementing the label, so the function will loop on label zero. That should be done right before the call to the other suspending functions:

when(state.label) {    0 -> { // Label 0 -> first execution        logger.log("fetching summary of $id")        sm.label = 1        fetchProfile(id, sm)        return    }    1 -> { // label 1 -> resuming        calculateAge(profile.dateOfBirth)        sm.label = 2        validateTerms(profile.country, age, sm)        return    }    2 -> // label 2 -> resuming and terminating        UserSummary(profile, age, terms)}

Notice that, by default, the label is zero in CoroutineImpl. Also, notice that we set the value for the next piece of code, not for the current one.