July 2016
Beginner to intermediate
776 pages
17h 26m
Korean
Content preview from 프로그래밍 스칼라: 실용적인 스칼라 활용법을 익히는 가장 확실한 실전 바이블 (2.11.x 버전 기반)
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453
10
장
스칼라 객체 시스템 I
Array(1, 2) == Array(1, 2) // = false
놀랍다! 다행히도
sameElements
라는 단순한 해법이 존재한다.
Array(1, 2) sameElements Array(1, 2) // = true
스칼라의
Array
는 단지 우리가 익히 알고 좋아해온 변경 가능한 자바 배열이라고 기억하는 것
이 더 좋다. 자바 배열은 우리가 스칼라 컬렉션 라이브러리에서 익숙해진 여러 메서드를 제공하
지 않는다.
따라서 배열을 비교해야 한다면, 대신 시퀀스를 사용하는 것이 더 나은 선택이 아닌지 고려해보
라(이런 대안이 바람직하지 않은 경우는 배열의 성능상 이점이 정말로 필요한 경우다).
반면
List
는 여러분의 예상대로 작동한다.
List
(
1
,
2
)
==
List
(
1
,
2
)
//
=
true
List
(
1
,
2
)
sameElements List
(
1
,
2
)
//
=
true
10.7
마치며
이 장에서는 상속이 일어나는 경우의 동작,
Predef
의 특징, 타입 계층구조의 기초, 동등성과
같은 스칼라 객체 시스템에서 중요한 주제를 다뤘다.
다음 장에서는 멤버 오버라이딩과 오버라이딩한 멤버 해결 규칙을 살펴봄으로써 객체 시스템에
대한 논의를 마무리할 것이다.
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.