Kotlin Intermediate Quiz 1
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Quiz 1
1. Which delegate is used for property initialization only when it is first accessed?
observable
lazy
vetoable
2. What does the 'reified' keyword allow you to do with generics in an inline function?
Access the type T at runtime
Force the type to be non-null
Limit T to a specific class hierarchy
3. What is the syntax '(x, y) = point' called in Kotlin?
Object mapping
Tuple assignment
Destructuring declaration
4. Which scope function returns the context object itself and uses 'this' as the receiver?
let
apply
run
5. Which modifier is required to overload an operator like '+'?
operator
override
overload
6. What is the primary advantage of using a Sequence over an Iterable for large collections?
It is thread-safe
It uses less memory for small lists
It performs lazy evaluation
7. What does the 'suspend' modifier signify in a function?
The function runs on a background thread
The function can be paused and resumed later
The function is deprecated
8. How do you create an alternative name for a complex type like (Int) -> String?
typealias
typedef
namealias
9. Which scope function is most commonly used for null-safety checks with '?.let'?
with
also
let
10. What is the benefit of a sealed interface over a regular interface?
It allows multiple inheritance
It restricts implementers to a specific set
It is faster at runtime
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