Beginner
Kotlin
Q8 / 100
What does the safe call operator ?. do?
Correct! Well done.
Incorrect.
The correct answer is B) Calls a method only if the receiver is not null; otherwise returns null
B
Correct Answer
Calls a method only if the receiver is not null; otherwise returns null
Explanation
str?.length returns null if str is null rather than throwing a NullPointerException.
Progress
8/100