Kotlin - Null Safety
Which of the following is the correct syntax for a safe cast in Kotlin?
val x = obj ___ String
Which of the following is the correct syntax for a safe cast in Kotlin?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Identify safe cast syntax
In Kotlin, the safe cast operator isas?which tries to cast safely.Step 2: Match syntax to code
The codeval x = obj as? Stringattempts to castobjtoStringsafely.Final Answer:
as? -> Option AQuick Check:
Safe cast syntax = as? [OK]
Quick Trick: Safe cast uses as? with question mark [OK]
Common Mistakes:
MISTAKES- Using as without question mark causes exception
- Confusing is (type check) with as? (cast)
- Using to which is for conversions, not casting
Master "Null Safety" in Kotlin
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