Object-oriented programming · interview question
How does returning a copy of a list in a getter method help maintain encapsulation?
Multiple choiceMediumchapter-3-curatedpremiumoopinvariants-and-validation
Answer and explanation
Correct answer
B. It prevents external modifications to the list
Why
Returning a copy of a list in a getter method prevents external code from modifying the original list, thus preserving the encapsulated state of the object. This approach ensures that the internal list remains unchanged, maintaining the object's invariants and integrity.
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