[switch week2] junghyun-eunjung #6
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eunjjungg
approved these changes
Jan 12, 2025
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| - Kotlin 이란? | ||
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| - (Java 동생..ㅎ) |
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| - 함수형 프로그래밍 | ||
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| - Java 에서 아래와 같이 Stream 을 썼다면, | ||
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| ```java | ||
| List<Person> personList = new ArrayList<>(); | ||
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| List<PersonResponse> result = personList.stream() | ||
| .filter(person -> Objects.nonNull(person.getSeq()) && Objects.nonNull(person.getName())) | ||
| .map(person -> new PersonResponse(person.getName(), person.getSeq())) | ||
| .toList(); | ||
| ``` | ||
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| - Kotlin 에서는 아래와 같이 사용할 수 있다. | ||
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| ```kotlin | ||
| val personList: List<Person> = listOf() | ||
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| val result: List<PersonResponse> = personList | ||
| .filter { person -> person.seq != null && person.name != null } | ||
| .map { person -> PersonResponse(person.name!!, person.seq!!) } | ||
| ``` |
| - 파일 레벨에서 간단하게 함수 선언 가능. | ||
| - Java 의 static method 를 대체할 수 있다. | ||
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| ### 문제 |
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week2
우아한 테크 코스문제 하나를 선택해서 풀어보고, 각자 pr 을 작성한 뒤 리뷰를 진행할 예정입니다.