Domain Modeling · interview question
A bug appears around composition. What is the strongest first debugging move?
Multiple choiceMediumchapter-7-curatedpremiumdomain-modelingcomposition
from dataclasses import dataclass
@dataclass
class Cart:
lines: list["OrderLine"]Answer and explanation
Correct answer
C. Trace one concrete example, inspect the state transitions, and compare them to the intended rule before rewriting anything.
Why
That approach is reliable because it creates evidence. Inventing inheritance too early often hides the real relationships in the problem.
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