[자동차 경주] 이예진 미션 제출합니다. #3
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Eunsaem03
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Oct 29, 2025
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| package racingcar.model.car; | |||
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| public record CarStatus(String name, int position) { } | |||
| private void validateDuplicateNames(List<Car> cars) { | ||
| Set<String> uniqueNames = cars.stream() | ||
| .map(Car::name) | ||
| .collect(Collectors.toSet()); |
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stream에 대해서 찾아보다가 .toList()가 .collect(Collectors.toList())를 간결한 형태로 사용했다는 걸 봤는데요! 이것도 .toSet()으로 간결하게 작성이 가능한가요?
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| public int maxPosition() { | ||
| return cars.stream() | ||
| .mapToInt(Car::position) |
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저도 3주차 과제는 상수화해서 사용해보려고 합니다 많이 보고 배워요 감사합니다!
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| private final Cars cars; | ||
| private final RoundLimit roundLimit; | ||
| private final List<List<CarStatus>> roundSnapshots = new ArrayList<>(); |
| this.roundLimit = roundLimit; | ||
| } | ||
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| public static RacingGame of(Cars cars, RoundLimit roundLimit) { |
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저번 주차 코드에서는 List.of에 대해서 물어보면서 불변 리스트 만들 때 사용한다고 알려주셨는데요 여기서 사용하는 of는 어떨 때 사용하나요? 무슨 의미인가요?
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| @FunctionalInterface | ||
| public interface ValueGenerator { | ||
| int getValue(); | ||
| } |
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