Kotlin - Collections Fundamentals
Why does Kotlin separate mutable and immutable collection interfaces instead of using a single interface with optional mutability?
Why does Kotlin separate mutable and immutable collection interfaces instead of using a single interface with optional mutability?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand design rationale
Kotlin separates interfaces to clearly distinguish mutable from immutable collections.Step 2: Reason about benefits
This separation helps prevent accidental changes and enforces contracts at compile time.Final Answer:
To enforce clear contracts and prevent accidental modification -> Option CQuick Check:
Separation enforces immutability contracts [OK]
Quick Trick: Separate interfaces clarify mutability intent [OK]
Common Mistakes:
MISTAKES- Thinking Kotlin lacks mutable collections
- Assuming fewer classes is goal
- Believing all collections are thread-safe
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