노민정 리팩토링 #5
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노민정 리팩토링 #5
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default boolean replace(K key,V old Value, V newValue) : 현재 지정된 값에 매핑된 경우에만 저장된 키의 항목을 바꾼다.
서비스 레이어가 일을 함에 있어 도메인 로직을 전혀 몰라도 된다는 특징이 있다
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https://github.com/dongho108/java-vendingmachine-precourse/tree/dh
클론 코딩으로 구조를 공부해보았습니다