Kotlin Intermediate Quiz 4
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Quiz 4
1. What is Kotlin Flow used for?
Sequential UI updates
Synchronous data streams
Asynchronous cold data streams
2. How does StateFlow differ from Flow?
StateFlow is cold
StateFlow is hot and holds a state
StateFlow is blocking
3. How do you return from a lambda expression to the calling function?
return@label
return
exit lambda
4. What keyword is used inside a custom setter to access the stored value?
value
it
field
5. What is the syntax for star-projection in Kotlin generics?
<any>
<*>
<?>
6. What is a 'use-site target' in Kotlin annotations?
Specifying if the annotation applies to field or getter
Mapping an annotation to a specific module
Defining a custom annotation processor
7. Which functions must be implemented to support destructuring in a custom class?
equals/hashCode
component1(), component2(), etc.
unpack()
8. What is a 'Channel' in Kotlin coroutines?
A way for coroutines to communicate values
A replacement for Threads
A network socket wrapper
9. Which Flow type is used to broadcast events to multiple observers?
StateFlow
SharedFlow
ColdFlow
10. Do typealiases create a new type at runtime?
Yes
Only for interfaces
No
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