Data Cleanup · interview question
What is the clearest sign that code around normalization pipelines should be refactored?
Multiple choiceMediumchapter-4-curatedpremiumdata-cleanupnormalization-pipelines
Answer and explanation
Correct answer
C. When the rule is no longer easy to trace, explain, or change without breaking nearby behavior.
Why
A refactor is justified when the code stops communicating its intent. Normalize one field or one invariant at a time so bad rows can be rejected for a clear reason.
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