lets_build_a_coroutine__state_blocks.kt

fun saveUserTasks(userId: Int, state: Int) {
    when (state) {
        0 -> {
            val user = loadUser(userId)
            println("user loaded")
            //  save loaded user
            //  pause execution
        }

        1 -> {
            //  resume execution
            //  restore saved user
            val tasks = loadTasks(user) // ERROR: unknown user
            println("tasks loaded")
            //  save loaded tasks
            //  pause execution
        }

        2 -> {
            //  resume execution
            //  restore saved tasks
            saveTasks(tasks) // ERROR: unknown tasks
        }
    }
}