Welcome to the Coroutines and LaunchedEffects in Jetpack Compose Quiz! This set of questions will test your understanding of key concepts related to coroutines, their behavior, and how to work with them in the context of Jetpack Compose. You’ll explore topics such as coroutine scopes, builders, dispatchers, suspend functions, structured concurrency, and the safe launching of coroutines using LaunchedEffect. These questions are designed to reinforce your knowledge and ensure you have a solid grasp of how to efficiently perform asynchronous operations in Android applications using Kotlin coroutines.
1.
Which coroutine builder is suitable for switching the context of a coroutine?
2.
When should the runBlocking coroutine builder be used?
3.
Why are coroutines considered more efficient than traditional multi-threading?
4.
What is the main difference between LaunchedEffect and SideEffect in Jetpack Compose?
5.
What is the behavior of the delay() function inside a coroutine?
6.
Which coroutine builder is most suitable when multiple coroutines need to be launched in parallel with a result returned to the caller?
7.
Which method is used to cancel all running coroutines in a coroutine scope?
8.
Which coroutine dispatcher should be used for tasks such as network requests or file reading?
9.
How does the coroutineScope builder differ from supervisorScope?
10.
What is the purpose of the async coroutine builder?
11.
What is the primary purpose of the main thread in an Android application?
12.
What is the role of the CoroutineScope in Kotlin?
13.
Which coroutine builder should be used for 'fire and forget' operations?
14.
Why is GlobalScope not recommended for use in Android apps?
15.
What is a Job in Kotlin coroutines?
16.
Why is runBlocking generally not recommended for use in Android apps?
17.
What is the role of the rememberCoroutineScope() function in Jetpack Compose?
18.
Which dispatcher is typically used for performing lightweight tasks and updating the UI?
19.
What is the purpose of the LaunchedEffect composable in Jetpack Compose?
20.
What is structured concurrency in Kotlin?
21.
What keyword is used to define a function that can be paused and resumed later in Kotlin?
22.
What is a potential consequence of using GlobalScope in an Android app?
23.
What is the purpose of the cancelAndJoin() method in coroutines?
24.
What happens if a coroutine fails in a coroutineScope but not in a supervisorScope?
25.
What happens if a coroutine launched in a LaunchedEffect changes one of its key parameters?
26.
What happens when a coroutine reaches a suspend point?
27.
Which coroutine scope is automatically canceled when a ViewModel instance is destroyed?
28.
What is the function of the rememberCoroutineScope() in Jetpack Compose?
29.
Which coroutine dispatcher is suitable for performing disk or network operations?
30.
Why is it important to use structured concurrency in Kotlin?