Kotlin - Control Flow as Expressions
Why must an
if expression in Kotlin always have an else branch when used to assign a value?Why must an if expression in Kotlin always have an else branch when used to assign a value?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand Kotlin expression rules
Expressions must return a value for every possible path to avoid errors.Step 2: Explain necessity of else branch
Without else, some paths return no value, causing compilation errors.Final Answer:
Because Kotlin requires all expressions to return a value in every case -> Option BQuick Check:
If expression needs else to cover all cases [OK]
Quick Trick: If expression must return value on all paths [OK]
Common Mistakes:
MISTAKES- Thinking else is optional
- Confusing readability with syntax requirement
- Believing if expressions can't return values
Master "Control Flow as Expressions" in Kotlin
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