[Kotlin] 접근 제한자(Kotlin's Visibility Modifier)
public, private, internal, protected
Posted by
Wonyong Jang
on October 19, 2021 ·
2 mins read
[Kotlin] 코틀린 Null 처리
nullable, non-nullable / safe call / safe cast / Elvis Operation / !! 연산자
Posted by
Wonyong Jang
on October 19, 2021 ·
9 mins read
[Kotlin] 코틀린의 주요 특성과 기초 배우기
property, backing field, class / val, var / fun / array / if, when, for, while / enum / smart cast
Posted by
Wonyong Jang
on October 17, 2021 ·
28 mins read
[Git] Revert를 사용하여 커밋 되돌리기
reset과 revert비교 / 협업을 위해 revert 사용하기 / Conflict 해결
Posted by
Wonyong Jang
on October 05, 2021 ·
4 mins read
[Git] Reset 명확히 알고 사용하기
HEAD의 이해 / Reset vs Checkout / git reset --hard, --mixed, --soft
Posted by
Wonyong Jang
on October 04, 2021 ·
5 mins read
[Scala] Case Object vs Enumerations
스칼라에서 열거형을 사용하는 방법 / Scala 2, 3
Posted by
Wonyong Jang
on September 26, 2021 ·
7 mins read
[Git] Upstream, Downstream, Origin
협업을 위한 remote repository와 upstream 이해하기 / fork repository sync
Posted by
Wonyong Jang
on September 21, 2021 ·
4 mins read
[DB] DocumentDB(MongoDB) Replica Set 과 readPreference 설정
Primary, Secondary, Arbiter / Write Concern / Replica Lag(복제지연) / Oplog, Journaling
Posted by
Wonyong Jang
on September 20, 2021 ·
11 mins read
[DB] MongoDB 커넥션
maxConnectionIdleTime, maxConnectionLifeTime, minPoolSize, maxPoolSize / MongoClientSettings
Posted by
Wonyong Jang
on September 17, 2021 ·
4 mins read
[Spark] Docker Ubuntu 컨테이너로 Spark 실습환경 만들기
도커를 이용한 master, worker 클러스터 환경 구성 / spark-submit / 스탠드 얼론 클러스터 매니저
Posted by
Wonyong Jang
on August 29, 2021 ·
14 mins read