ExploreCoroutines_MainActivity.kt

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        lifecycleScope.launch {
            val randomNum = getRandomNum() // suspension point #1
            val sqrt = getSqrt(randomNum.toDouble()) // suspension point #2
            log(sqrt.toString())
        }
    }

    private suspend fun getRandomNum(): Int {
        delay(1000)
        return (1..1000).shuffled().first()
    }

    private suspend fun getSqrt(num: Double): Double {
        delay(2000)
        return sqrt(num)
    }

    private fun log(text: String) {
        Log.i(this@MainActivity::class.simpleName, text)
    }
}