[정현준] 3주차 답안 추가 #390
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[정현준] 3주차 답안 추가 #390
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bky373
reviewed
Aug 28, 2024
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| climbStairs(1) shouldBe 1 | ||
| climbStairs(2) shouldBe 2 | ||
| climbStairs(3) shouldBe 3 | ||
| climbStairs(4) shouldBe 5 |
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역시 kotest 가 테스트 코드 가독성이 정말 뛰어난 것 같습니다!
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| if (map.containsKey(diff)) { | ||
| return intArrayOf(map[diff]!!, index) | ||
| } |
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kotlin 의 null safety 장점을 살리기 위해 아래처럼 safe call operator(?.) 를 사용해보면 어떨까요?
map[diff]?.let {
return intArrayOf(it, index)
}NPE 를 선호하신다면 not-null assertion operator(!!) 를 사용하셔도 되나 코틀린의 장점을 생각할 때 보통 지양하는 편이긴 합니다!
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리뷰 감사합니다 ㅎㅎ !!연산은 실무에서는 절대 사용하지 않는 편인데 이 문제에서는 절대 비어있지 않을거라고 생각하고 사용했었네요 ㅠ 말씀하신대로 수정해봤습니다. 버릇을 잘 들여놓아야겠습니다 ㅎㅎ
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