Object-oriented programming · interview question
You have a class with a list of orders in an e-commerce system. How can you safely allow external classes to access these orders?
Multiple choiceHardchapter-3-curatedpremiumoopencapsulation
Answer and explanation
Correct answer
A. Return a copy of the list
Why
Returning a copy of the list ensures that external classes cannot modify the original list, maintaining the encapsulation and integrity of the data. This approach protects the internal state from unintended changes.
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