[산하] 13장 정리 #42
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[산하] 13장 정리 #42
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headF1rst
requested review from
waterfogSW,
rilac1 and
juy4556
as code owners
waterfogSW
approved these changes
Nov 29, 2022
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| 상속 관계로 연결한 두 클래스가 서브타이핑 관계를 만족시키며 서브타입은 그것의 기반 타입에 대해 대체 가능해야 한다. | ||
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| ### 리스코프 치환 원칙을 위반하는 is-a 관계 (정사각형, 직사각형) |
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리스코프 치환원칙은 SOLID를 설명하면서 매번 어물쩡 넘아가곤 했었는데 이번 예시로 설명하면 좋겠네요 👍🏼
rilac1
approved these changes
Dec 6, 2022
| - 하지만 `Square` 는 너비와 높이가 항상 같다. | ||
| - Ractangle을 Square로 대체할 경우 Rectangle에 세워진 가정을 위반할 확률이 높다. | ||
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| - is-a 관계의 문장 앞에 `"클라이언트 입장에서"`라는 말이 빠져 있다고 생각하라. |
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상속 관계를 결정지을 때 중요하게 고려해야 하는 요소네요!
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