Object-oriented programming · interview question
Which of the following best describes a class invariant?
Multiple choiceEasychapter-3-curatedpremiumoopinvariants-and-validation
Answer and explanation
Correct answer
A. A condition that must always be true for every instance
Why
A class invariant is a condition that must always hold true for every instance of the class. Invariants are crucial for ensuring the correctness of an object's state and behavior, and they help maintain the integrity of the object throughout its lifecycle.
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