Skip to content
Sharp

Domain Modeling · interview question

What does a strong engineer do when reasoning through instance methods code?

Multiple choiceMediumchapter-7-curatedpremiumdomain-modelinginstance-methods
python
from dataclasses import dataclass

@dataclass
class OrderLine:
    unit_price: float
    quantity: int

    def line_total(self) -> float:
        return self.unit_price * self.quantity
Choose one answer
Answer and explanation

Correct answer

D. 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.

Test yourself on Domain Modeling

A free test with instant, explained results. No account needed.

Start free test

More Domain Modeling questions

All Domain Modeling questions →