August 2024
Beginner to intermediate
488 pages
11h 1m
Korean
Content preview from 실무로 통하는 클린 코드
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204
실무로 통하는 클린 코드
11.4
과도한 괄호 제거하기
문제
표현식에 괄호가 너무 많습니다.
해결
코드 의미를 변경하지 않고 괄호를 최대한 적게 사용합니다.
설명
적어도 서구 문화권에서는 코드를 왼쪽에서 오른쪽으로 읽는데, 괄호는 이러한 흐름을
끊어 인지적 복잡성을 가중시키는 경우가 많습니다. 코드를 한 번 작성하면 여러 번 읽어야 하
므로 가독성이 가장 중요합니다. 다음은 회전하지 않는 블랙홀의 크기를 측정하는 슈바르츠실
트 반지름
Schwarzschild
radius
을 계산하는 데 사용하는 수식입니다. 괄호가 매우 많네요.
schwarzschild = ((((2 * GRAVITATION_CONSTANT)) * mass) / ((LIGHT_SPEED ** 2)))
쓸데없는 괄호를 제거한 후의 모습은 다음과 같습니다.
schwarzschild = (2 * GRAVITATION_CONSTANT * mass) / (LIGHT_SPEED ** 2)
다음과 같이 더 압축할 수도 있습니다.
schwarzschild = 2 * GRAVITATION_CONSTANT * mass / (LIGHT_SPEED ** 2)
수학의 연산 순서에 따라 곱셈과 나눗셈이 덧셈과 뺄셈보다 우선한다는 것을 알기 때문에
2
,
GRAVITATION
_
CONSTANT
(중력 상수 ),
mass
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.