kotlin_fundamentals_10.kt

fun taskT(): Job {
    return GlobalScope.launch(Dispatchers.IO) {
        println("Starting C on ${Thread.currentThread().name}\n")
        val resultT1 = t1()
        println("Starting task T2,T3 on ${Thread.currentThread().name}")
        val jobT2T3 = async {
            println("Inside Task T2,T3 on ${Thread.currentThread().name}")
            // t2 and t3 are suspend functions and will suspend this block 
            // until it returns the result
            val resultT2 = t2(resultT1)
            val resultT3 = t3(resultT2)
            return@async resultT3
        }
        println("Starting task T4,T5 on ${Thread.currentThread().name}\n")
        val jobT4T5 = async(Dispatchers.Default, start = CoroutineStart.LAZY) {
            println("Inside Task T4,T5 on ${Thread.currentThread().name}")
            val resultT4 = t4()
            val resultT5 = t5(scope = this, param4 = resultT4)
            return@async resultT5
        }

        delay(100)
        println("Going to await result of task T2,T3 and T4,T5")
        val combinedResult = jobT2T3.await() + "_" + jobT4T5.await()

        println("\nThe final result is $combinedResult")
    }
}