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Domain Modeling · interview question

What does a strong engineer do when reasoning through composition code?

Multiple choiceMediumchapter-7-curatedpremiumdomain-modelingcomposition
python
from dataclasses import dataclass

@dataclass
class Cart:
    lines: list["OrderLine"]
Choose one answer
Answer and explanation

Correct answer

B. Narrate the data shape, the state changes, and the exact rule order step by step.

Why

Interviewers often use simple code to test whether you can reason through execution without bluffing.

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