What i've learnt

Extract Function(함수 추출하기)

https://velog.io/@y1andyu/Refactoring-%ED%95%A8%EC%88%98-%EC%B6%94%EC%B6%9C%ED%95%98%EA%B8%B0

Encapsulate Collection(컬렉션 캡슐화하기)

https://velog.io/@y1andyu/Refactoring-%EC%BB%AC%EB%A0%89%EC%85%98-%EC%BA%A1%EC%8A%90%ED%99%94%ED%95%98%EA%B8%B0

Replace Primitive with Object(기본형을 객체로 바꾸기)

https://velog.io/@y1andyu/Refactoring-%EA%B8%B0%EB%B3%B8%ED%98%95%EC%9D%84-%EA%B0%9D%EC%B2%B4%EB%A1%9C-%EB%B0%94%EA%BE%B8%EA%B8%B0

Replace temp with query(임시변수를 쿼리로 바꾸기)

https://velog.io/@y1andyu/Refactoring-%EC%9E%84%EC%8B%9C-%EB%B3%80%EC%88%98%EB%A5%BC-%ED%95%A8%EC%88%98%EB%A1%9C-%EB%B0%94%EA%BE%B8%EA%B8%B0

Extract Class(클래스 추출하기)

https://velog.io/@y1andyu/Refactoring-%ED%81%B4%EB%9E%98%EC%8A%A4-%EC%B6%94%EC%B6%9C%ED%95%98%EA%B8%B0

Hide Delegate(위임 숨기기)

https://velog.io/@y1andyu/Refactoring-%EC%9C%84%EC%9E%84-%EC%88%A8%EA%B8%B0%EA%B8%B0

Move Function(함수 옮기기)

https://velog.io/@y1andyu/Refactoring-%ED%95%A8%EC%88%98-%EC%98%AE%EA%B8%B0%EA%B8%B0

hi