Kotlin - Control Flow as Expressions
Find the error in this Kotlin code snippet:
val x = 3
when (x) {
1, 2 -> println("Low")
3 && 4 -> println("Medium")
else -> println("High")
}
Find the error in this Kotlin code snippet: val x = 3 when (x) { 1, 2 -> println("Low") 3 && 4 -> println("Medium") else -> println("High") }
medium📝 Debug Q6 of 15
Step-by-Step Solution
Solution:
Step 1: Identify invalid syntax in when conditions
The condition '3 && 4' uses logical AND, which is invalid syntax in when branches.Step 2: Correct usage of multiple conditions
Multiple values should be separated by commas, not logical operators.Final Answer:
Using '&&' instead of commas in when conditions -> Option AQuick Check:
Use commas, not logical operators, in when conditions = D [OK]
Quick Trick: Replace logical operators with commas in when conditions [OK]
Common Mistakes:
MISTAKES- Using && or || instead of commas
- Thinking else branch is mandatory error
- Confusing println usage as error
Master "Control Flow as Expressions" in Kotlin
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