Object-oriented programming · interview question
If a 'Product' class has a method that modifies its price, how can you ensure this modification is visible to all 'CartItem' instances holding a reference to this 'Product'?
Multiple choiceMediumchapter-2-curatedpremiumoopobject-references
Answer and explanation
Correct answer
D. Ensure all 'CartItem' instances hold references to the same 'Product' object.
Why
When all 'CartItem' instances hold a reference to the same 'Product' object, any modification to the 'Product' will be visible to all because they reference the same memory location.
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