명령 프롬프트 cd Desk top 입력하니까 저장된 경로를 찾을 수 없다고 뜨는데 왜 그러는 건가요?

안녕하세요~ C# 강의 듣고 있는데 제가 설치한 2022 VISUAL STUDIO는 // See https://aka.ms/new-console-template for more information int hp = 100; int level = 50; bool isAlive = (hp > 100); bool isHighLevel = (level >= 40); 이런식으로 써지는데요.   강사님께서 맨처음 C#을 켜시면    using System; { class Program { static void Main(string[] args)  이렇게 시작하더라구요ㅠㅠ 제 버전에서는 약간 다르고 저 위의 코드로 실행을 했을 때 코드가 없다고 떠서 어떻게 해야할지 모르겠습니다ㅜ

여러분들~ 열공하시느라 수고가 많으십니다. 이거 보시는 분들 중 강의를 보시다보면 새로고침한다고 새탭을 켰다가 끄는 것을 보실 수 있는데.. 그냥 F5 눌르십셔. -끝-

정점 3개의 컬러가 보간되어서 픽셀 셰이더의 input에 들어가는거는 이해했는데, 그럼 이 때 Color 외에도 Lighting 수업에서 Pixel Shader에 넘겨주셨던 viewPos, viewNormal같은 것들도 정점 3개의 비율에 따라 보간되어서 들어가나요? 약간 이런 느낌으로 이해하고 있는데, 정확한지 여쭤보고 싶습니다. 따로 MS 자료를 찾아봤는데 정확한 문서를 찾지 못해서 질문드립니다.

int hp = 100; Console.WriteLine(hp++);   bool b = hp < 100;   이렇게 프로그래밍하면, 100이 나오는데 false가 안나오고요 .. 어떻게 해야할까요? 

Error running 'Unnamed': Argument for @NotNull parameter 'mainClassName' of com/intellij/execution/util/JavaParametersUtil.isClassInProductionSources must not be null Run을 하려고 하는데 이런 오류가 나오는데 해결 방법이 어떻게 되나요?!

testbench에서 if의 조건문에서 !== 의 연산자를 사용해주셨는데 !== 보통 잘 사용하지 않는 걸로 권장하는 걸로 알고 있습니다! 왜 굳이 != 말고 !==을 사용하셨는지 궁금합니다!

- 학습 관련 질문을 남겨주세요. 상세히 작성하면 더 좋아요! - 먼저 유사한 질문이 있었는지 검색해보세요. - 서로 예의를 지키며 존중하는 문화를 만들어가요. - 잠깐! 인프런 서비스 운영 관련 문의는 1:1 문의하기를 이용해주세요.

파이참 강의를 수강중인데 예제파일 다운이 안되어 문의 드립니다.

주문 취소 기능을 가진 cancel 버튼을 클릭해도 주문 취소 상태로 변하지 않습니다.  무엇이 문제일까요?   cancel 버튼 누를 시 콘솔 2022-01-28 09:45:17.700 DEBUG 7444 --- [nio-8080-exec-4] org.hibernate.SQL                        :      select         order0_.order_id as order_id1_6_0_,         order0_.delivery_id as delivery4_6_0_,         order0_.member_id as member_i5_6_0_,         order0_.order_date as order_da2_6_0_,         order0_.status as status3_6_0_      from         orders order0_      where         order0_.order_id=? 2022-01-28 09:45:17.700 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [3] 2022-01-28 09:45:17.702  INFO 7444 --- [nio-8080-exec-4] p6spy                                    : #1643330717702 | took 1ms | statement | connection 18| url jdbc:h2:tcp://localhost/~/jpashop select order0_.order_id as order_id1_6_0_, order0_.delivery_id as delivery4_6_0_, order0_.member_id as member_i5_6_0_, order0_.order_date as order_da2_6_0_, order0_.status as status3_6_0_ from orders order0_ where order0_.order_id=? select order0_.order_id as order_id1_6_0_, order0_.delivery_id as delivery4_6_0_, order0_.member_id as member_i5_6_0_, order0_.order_date as order_da2_6_0_, order0_.status as status3_6_0_ from orders order0_ where order0_.order_id=3; 2022-01-28 09:45:17.703 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([delivery4_6_0_] : [BIGINT]) - [4] 2022-01-28 09:45:17.703 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([member_i5_6_0_] : [BIGINT]) - [1] 2022-01-28 09:45:17.704 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([order_da2_6_0_] : [TIMESTAMP]) - [2022-01-28T09:43:00.843051] 2022-01-28 09:45:17.704 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([status3_6_0_] : [VARCHAR]) - [ORDER] 2022-01-28 09:45:17.706 TRACE 7444 --- [nio-8080-exec-4] org.hibernate.type.CollectionType        : Created collection wrapper: [jpabook.jpashop.domain.Order.orderItems#3] 2022-01-28 09:45:17.707 DEBUG 7444 --- [nio-8080-exec-4] org.hibernate.SQL                        :      select         delivery0_.delivery_id as delivery1_2_0_,         delivery0_.city as city2_2_0_,         delivery0_.street as street3_2_0_,         delivery0_.zipcode as zipcode4_2_0_,         delivery0_.status as status5_2_0_      from         delivery delivery0_      where         delivery0_.delivery_id=? 2022-01-28 09:45:17.708 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [4] 2022-01-28 09:45:17.710  INFO 7444 --- [nio-8080-exec-4] p6spy                                    : #1643330717710 | took 0ms | statement | connection 18| url jdbc:h2:tcp://localhost/~/jpashop select delivery0_.delivery_id as delivery1_2_0_, delivery0_.city as city2_2_0_, delivery0_.street as street3_2_0_, delivery0_.zipcode as zipcode4_2_0_, delivery0_.status as status5_2_0_ from delivery delivery0_ where delivery0_.delivery_id=? select delivery0_.delivery_id as delivery1_2_0_, delivery0_.city as city2_2_0_, delivery0_.street as street3_2_0_, delivery0_.zipcode as zipcode4_2_0_, delivery0_.status as status5_2_0_ from delivery delivery0_ where delivery0_.delivery_id=4; 2022-01-28 09:45:17.710 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([city2_2_0_] : [VARCHAR]) - [qq] 2022-01-28 09:45:17.710 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([street3_2_0_] : [VARCHAR]) - [qq] 2022-01-28 09:45:17.710 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([zipcode4_2_0_] : [VARCHAR]) - [11111] 2022-01-28 09:45:17.711 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([status5_2_0_] : [VARCHAR]) - [null] 2022-01-28 09:45:17.711 DEBUG 7444 --- [nio-8080-exec-4] org.hibernate.SQL                        :      select         orderitems0_.order_id as order_id5_5_0_,         orderitems0_.order_item_id as order_it1_5_0_,         orderitems0_.order_item_id as order_it1_5_1_,         orderitems0_.count as count2_5_1_,         orderitems0_.item_id as item_id4_5_1_,         orderitems0_.order_id as order_id5_5_1_,         orderitems0_.order_price as order_pr3_5_1_      from         order_item orderitems0_      where         orderitems0_.order_id=? 2022-01-28 09:45:17.712 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [3] 2022-01-28 09:45:17.713  INFO 7444 --- [nio-8080-exec-4] p6spy                                    : #1643330717713 | took 0ms | statement | connection 18| url jdbc:h2:tcp://localhost/~/jpashop select orderitems0_.order_id as order_id5_5_0_, orderitems0_.order_item_id as order_it1_5_0_, orderitems0_.order_item_id as order_it1_5_1_, orderitems0_.count as count2_5_1_, orderitems0_.item_id as item_id4_5_1_, orderitems0_.order_id as order_id5_5_1_, orderitems0_.order_price as order_pr3_5_1_ from order_item orderitems0_ where orderitems0_.order_id=? select orderitems0_.order_id as order_id5_5_0_, orderitems0_.order_item_id as order_it1_5_0_, orderitems0_.order_item_id as order_it1_5_1_, orderitems0_.count as count2_5_1_, orderitems0_.item_id as item_id4_5_1_, orderitems0_.order_id as order_id5_5_1_, orderitems0_.order_price as order_pr3_5_1_ from order_item orderitems0_ where orderitems0_.order_id=3; 2022-01-28 09:45:17.713 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([order_it1_5_1_] : [BIGINT]) - [5] 2022-01-28 09:45:17.714 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([count2_5_1_] : [INTEGER]) - [3] 2022-01-28 09:45:17.714 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([item_id4_5_1_] : [BIGINT]) - [2] 2022-01-28 09:45:17.714 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([order_id5_5_1_] : [BIGINT]) - [3] 2022-01-28 09:45:17.714 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([order_pr3_5_1_] : [INTEGER]) - [1111] 2022-01-28 09:45:17.714 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([order_id5_5_0_] : [BIGINT]) - [3] 2022-01-28 09:45:17.714 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([order_it1_5_0_] : [BIGINT]) - [5] 2022-01-28 09:45:17.715 DEBUG 7444 --- [nio-8080-exec-4] org.hibernate.SQL                        :      select         item0_.item_id as item_id2_3_0_,         item0_.name as name3_3_0_,         item0_.price as price4_3_0_,         item0_.stock_quantity as stock_qu5_3_0_,         item0_.artist as artist6_3_0_,         item0_.etc as etc7_3_0_,         item0_.author as author8_3_0_,         item0_.isbn as isbn9_3_0_,         item0_.actor as actor10_3_0_,         item0_.director as directo11_3_0_,         item0_.dtype as dtype1_3_0_      from         item item0_      where         item0_.item_id=? 2022-01-28 09:45:17.716 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [2] 2022-01-28 09:45:17.717  INFO 7444 --- [nio-8080-exec-4] p6spy                                    : #1643330717717 | took 0ms | statement | connection 18| url jdbc:h2:tcp://localhost/~/jpashop select item0_.item_id as item_id2_3_0_, item0_.name as name3_3_0_, item0_.price as price4_3_0_, item0_.stock_quantity as stock_qu5_3_0_, item0_.artist as artist6_3_0_, item0_.etc as etc7_3_0_, item0_.author as author8_3_0_, item0_.isbn as isbn9_3_0_, item0_.actor as actor10_3_0_, item0_.director as directo11_3_0_, item0_.dtype as dtype1_3_0_ from item item0_ where item0_.item_id=? select item0_.item_id as item_id2_3_0_, item0_.name as name3_3_0_, item0_.price as price4_3_0_, item0_.stock_quantity as stock_qu5_3_0_, item0_.artist as artist6_3_0_, item0_.etc as etc7_3_0_, item0_.author as author8_3_0_, item0_.isbn as isbn9_3_0_, item0_.actor as actor10_3_0_, item0_.director as directo11_3_0_, item0_.dtype as dtype1_3_0_ from item item0_ where item0_.item_id=2; 2022-01-28 09:45:17.717 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([dtype1_3_0_] : [VARCHAR]) - [B] 2022-01-28 09:45:17.718 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([name3_3_0_] : [VARCHAR]) - [add] 2022-01-28 09:45:17.719 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([price4_3_0_] : [INTEGER]) - [1111] 2022-01-28 09:45:17.719 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([stock_qu5_3_0_] : [INTEGER]) - [1108] 2022-01-28 09:45:17.719 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([author8_3_0_] : [VARCHAR]) - [dffdsf] 2022-01-28 09:45:17.719 TRACE 7444 --- [nio-8080-exec-4] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([isbn9_3_0_] : [VARCHAR]) - [3432423] 2022-01-28 09:45:17.720 TRACE 7444 --- [nio-8080-exec-4] org.hibernate.type.CollectionType        : Created collection wrapper: [jpabook.jpashop.domain.item.Item.categories#2] 2022-01-28 09:45:17.722  INFO 7444 --- [nio-8080-exec-4] p6spy                                    : #1643330717722 | took 0ms | commit | connection 18| url jdbc:h2:tcp://localhost/~/jpashop   ; 2022-01-28 09:45:17.749 DEBUG 7444 --- [nio-8080-exec-3] org.hibernate.SQL                        :      select         order0_.order_id as order_id1_6_,         order0_.delivery_id as delivery4_6_,         order0_.member_id as member_i5_6_,         order0_.order_date as order_da2_6_,         order0_.status as status3_6_      from         orders order0_      inner join         member member1_              on order0_.member_id=member1_.member_id limit ? 2022-01-28 09:45:17.750  INFO 7444 --- [nio-8080-exec-3] p6spy                                    : #1643330717750 | took 0ms | statement | connection 19| url jdbc:h2:tcp://localhost/~/jpashop select order0_.order_id as order_id1_6_, order0_.delivery_id as delivery4_6_, order0_.member_id as member_i5_6_, order0_.order_date as order_da2_6_, order0_.status as status3_6_ from orders order0_ inner join member member1_ on order0_.member_id=member1_.member_id limit ? select order0_.order_id as order_id1_6_, order0_.delivery_id as delivery4_6_, order0_.member_id as member_i5_6_, order0_.order_date as order_da2_6_, order0_.status as status3_6_ from orders order0_ inner join member member1_ on order0_.member_id=member1_.member_id limit 1000; 2022-01-28 09:45:17.750 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([order_id1_6_] : [BIGINT]) - [3] 2022-01-28 09:45:17.751 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([delivery4_6_] : [BIGINT]) - [4] 2022-01-28 09:45:17.751 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([member_i5_6_] : [BIGINT]) - [1] 2022-01-28 09:45:17.751 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([order_da2_6_] : [TIMESTAMP]) - [2022-01-28T09:43:00.843051] 2022-01-28 09:45:17.752 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([status3_6_] : [VARCHAR]) - [ORDER] 2022-01-28 09:45:17.753 TRACE 7444 --- [nio-8080-exec-3] org.hibernate.type.CollectionType        : Created collection wrapper: [jpabook.jpashop.domain.Order.orderItems#3] 2022-01-28 09:45:17.755  INFO 7444 --- [nio-8080-exec-3] p6spy                                    : #1643330717755 | took 0ms | commit | connection 19| url jdbc:h2:tcp://localhost/~/jpashop   ; 2022-01-28 09:45:17.776 DEBUG 7444 --- [nio-8080-exec-3] org.hibernate.SQL                        :      select         member0_.member_id as member_i1_4_0_,         member0_.city as city2_4_0_,         member0_.street as street3_4_0_,         member0_.zipcode as zipcode4_4_0_,         member0_.name as name5_4_0_      from         member member0_      where         member0_.member_id=? 2022-01-28 09:45:17.776 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [1] 2022-01-28 09:45:17.777  INFO 7444 --- [nio-8080-exec-3] p6spy                                    : #1643330717777 | took 0ms | statement | connection 19| url jdbc:h2:tcp://localhost/~/jpashop select member0_.member_id as member_i1_4_0_, member0_.city as city2_4_0_, member0_.street as street3_4_0_, member0_.zipcode as zipcode4_4_0_, member0_.name as name5_4_0_ from member member0_ where member0_.member_id=? select member0_.member_id as member_i1_4_0_, member0_.city as city2_4_0_, member0_.street as street3_4_0_, member0_.zipcode as zipcode4_4_0_, member0_.name as name5_4_0_ from member member0_ where member0_.member_id=1; 2022-01-28 09:45:17.778 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([city2_4_0_] : [VARCHAR]) - [qq] 2022-01-28 09:45:17.778 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([street3_4_0_] : [VARCHAR]) - [qq] 2022-01-28 09:45:17.778 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([zipcode4_4_0_] : [VARCHAR]) - [11111] 2022-01-28 09:45:17.778 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([name5_4_0_] : [VARCHAR]) - [qq] 2022-01-28 09:45:17.778 TRACE 7444 --- [nio-8080-exec-3] org.hibernate.type.CollectionType        : Created collection wrapper: [jpabook.jpashop.domain.Member.orders#1] 2022-01-28 09:45:17.780 DEBUG 7444 --- [nio-8080-exec-3] org.hibernate.SQL                        :      select         orderitems0_.order_id as order_id5_5_0_,         orderitems0_.order_item_id as order_it1_5_0_,         orderitems0_.order_item_id as order_it1_5_1_,         orderitems0_.count as count2_5_1_,         orderitems0_.item_id as item_id4_5_1_,         orderitems0_.order_id as order_id5_5_1_,         orderitems0_.order_price as order_pr3_5_1_      from         order_item orderitems0_      where         orderitems0_.order_id=? 2022-01-28 09:45:17.780 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [3] 2022-01-28 09:45:17.782  INFO 7444 --- [nio-8080-exec-3] p6spy                                    : #1643330717782 | took 1ms | statement | connection 19| url jdbc:h2:tcp://localhost/~/jpashop select orderitems0_.order_id as order_id5_5_0_, orderitems0_.order_item_id as order_it1_5_0_, orderitems0_.order_item_id as order_it1_5_1_, orderitems0_.count as count2_5_1_, orderitems0_.item_id as item_id4_5_1_, orderitems0_.order_id as order_id5_5_1_, orderitems0_.order_price as order_pr3_5_1_ from order_item orderitems0_ where orderitems0_.order_id=? select orderitems0_.order_id as order_id5_5_0_, orderitems0_.order_item_id as order_it1_5_0_, orderitems0_.order_item_id as order_it1_5_1_, orderitems0_.count as count2_5_1_, orderitems0_.item_id as item_id4_5_1_, orderitems0_.order_id as order_id5_5_1_, orderitems0_.order_price as order_pr3_5_1_ from order_item orderitems0_ where orderitems0_.order_id=3; 2022-01-28 09:45:17.782 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([order_it1_5_1_] : [BIGINT]) - [5] 2022-01-28 09:45:17.783 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([count2_5_1_] : [INTEGER]) - [3] 2022-01-28 09:45:17.783 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([item_id4_5_1_] : [BIGINT]) - [2] 2022-01-28 09:45:17.783 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([order_id5_5_1_] : [BIGINT]) - [3] 2022-01-28 09:45:17.783 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([order_pr3_5_1_] : [INTEGER]) - [1111] 2022-01-28 09:45:17.783 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([order_id5_5_0_] : [BIGINT]) - [3] 2022-01-28 09:45:17.783 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([order_it1_5_0_] : [BIGINT]) - [5] 2022-01-28 09:45:17.784 DEBUG 7444 --- [nio-8080-exec-3] org.hibernate.SQL                        :      select         item0_.item_id as item_id2_3_0_,         item0_.name as name3_3_0_,         item0_.price as price4_3_0_,         item0_.stock_quantity as stock_qu5_3_0_,         item0_.artist as artist6_3_0_,         item0_.etc as etc7_3_0_,         item0_.author as author8_3_0_,         item0_.isbn as isbn9_3_0_,         item0_.actor as actor10_3_0_,         item0_.director as directo11_3_0_,         item0_.dtype as dtype1_3_0_      from         item item0_      where         item0_.item_id=? 2022-01-28 09:45:17.787 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [2] 2022-01-28 09:45:17.788  INFO 7444 --- [nio-8080-exec-3] p6spy                                    : #1643330717788 | took 0ms | statement | connection 19| url jdbc:h2:tcp://localhost/~/jpashop select item0_.item_id as item_id2_3_0_, item0_.name as name3_3_0_, item0_.price as price4_3_0_, item0_.stock_quantity as stock_qu5_3_0_, item0_.artist as artist6_3_0_, item0_.etc as etc7_3_0_, item0_.author as author8_3_0_, item0_.isbn as isbn9_3_0_, item0_.actor as actor10_3_0_, item0_.director as directo11_3_0_, item0_.dtype as dtype1_3_0_ from item item0_ where item0_.item_id=? select item0_.item_id as item_id2_3_0_, item0_.name as name3_3_0_, item0_.price as price4_3_0_, item0_.stock_quantity as stock_qu5_3_0_, item0_.artist as artist6_3_0_, item0_.etc as etc7_3_0_, item0_.author as author8_3_0_, item0_.isbn as isbn9_3_0_, item0_.actor as actor10_3_0_, item0_.director as directo11_3_0_, item0_.dtype as dtype1_3_0_ from item item0_ where item0_.item_id=2; 2022-01-28 09:45:17.788 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([dtype1_3_0_] : [VARCHAR]) - [B] 2022-01-28 09:45:17.789 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([name3_3_0_] : [VARCHAR]) - [add] 2022-01-28 09:45:17.789 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([price4_3_0_] : [INTEGER]) - [1111] 2022-01-28 09:45:17.789 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([stock_qu5_3_0_] : [INTEGER]) - [1108] 2022-01-28 09:45:17.789 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([author8_3_0_] : [VARCHAR]) - [dffdsf] 2022-01-28 09:45:17.789 TRACE 7444 --- [nio-8080-exec-3] o.h.type.descriptor.sql.BasicExtractor   : extracted value ([isbn9_3_0_] : [VARCHAR]) - [3432423] 2022-01-28 09:45:17.789 TRACE 7444 --- [nio-8080-exec-3] org.hibernate.type.CollectionType        : Created collection wrapper: [jpabook.jpashop.domain.item.Item.categories#2]     소스코드 : https://github.com/AmyLim328/springboot-jpa-jpashop

제네릭?

안녕하세요. 우선 좋은 강의 제공해주셔서 감사합니다.   ResourceQuota 에서 ns 외에도 cluster 전체 단위로 권한을 부여 하려면, 1. 어느 오브젝트에다가 설정을 해줘야하는지, 2. 클러스터 전체 단위로 리소스를 제한하는 경우가 어떤 케이스가 있는지(네임스페이스 단위로 분리해서 쓰는 경우가 아닐 것 같아서..) 여쭤봐도 될까요? 뭔가 하나의 클러스터를 구성해서 쓰는데, 이 클러스터에서 사용 할 수 있는 컴퓨팅 자원을 한 번 더 제한해서 쓰는 케이스에 대해서 궁금합니다.(+어떻게 지원하는지) 감사합니다.   -  https://kubernetes.io/ko/docs/concepts/policy/resource-quotas/

jajinmori1@naver.com

1. 영상 15분경, mainactivity에서 putExtra("data", "1..9") 설정 후  imageinsideactivity에서 getStringExtra("data")를 설정만 했는데도, 사진을 눌렀을때 value 값을 알아서 반환하여 toasting했습니다. 이 부분 이해가 잘 안돼서 그런데 설명 부탁드리겠씁니다.   2. R.layout / R.drawable 할때 R의 개념을 설명 부탁드리겠습니다.   3. activity_image_inside.xml에서  <ImageView android:id="@+id/memberImageArea" android:src="@drawable/member_1" android:layout_width="match_parent" android:layout_height="match_parent"/> src는 분명 사진 member_1이었는데,  setImageResource의 함수로 인해서 사진들이 바뀐것 같은데, 개념설명 부탁드리겠습니다~!  

금일 centos:8 기반 docker-compose를 테스트 해보면서 다음과 같은 에러를 확인하였습니다.    "CHANGE MASTER TO MASTER_AUTO_POSITION = 1 cannot be executed because @@GLOBAL.GTID_MODE = OFF."   첨부된 예제 파일을 그대로 사용했기에 여러방법으로 테스트를 진행했고 결국 모든 volumes을 제거하고 my.cnf를 확인하였습니다.   현재 centos:8의 my.cnf 위치는 /etc/my.cnf로 나옵니다.   때문에 예제로 사용하시는 docker-compose와 다릅니다.   예상되는 문제 요소로, 저는 github의 Dockerfile을 기반으로 node_exporter, mysqld_exporter만 설치하는 걸로 수정했습니다.   yum으로 설치하는 경우와 소스로 설치하는 경우의 차이로 my.cnf 위치가 달라진다면, github를 참고하시는 영상이 있었기 때문에 이러한 부분을 따로 명시하시면 좋으실것 같습니다.   혹시나 이러한 부분을 잘 모르는 사람들이 문제 인식을 잘 못할수 있기 때문에 리포팅 드립니다. 참고 하시면 좋으실것 같습니다.

안녕하세요 영한님 서포터즈님들  V4에서 OrderQueryRepository 에 있는 findOrders 메서드에 대한 질문입니다. lazy인데 어떻게 member와 delivery가 같이 조회되는지 이해가 되질 않습니다.. m.name을 알기위해 member 엔티티를 select 해야한다고 생각을 했습니다 혹시 어느 부분이랑 제가 헷갈리는걸까요?   해당 단원 qna에서 해당 질문과 비슷한 게 있었는데 fetch join에 대해서만 말씀해주셔서 궁금해서 여쭤보게됐습니다   감사합니다     안녕하세요!! 질문 드리고 답을 기다리는 동안에 계속 찾아보고 생각해봤는데아직 저 자신한테 납득이 안되서요,, 혹시 맞는지 여쭤보고 싶습니다 API 개발 고급 - 지연 로딩과 조회 성능 최적화 강의에서 V4를 보고왔습니다 제가 의심한 부분은 "일반적인 SQL을 사용할 대 처럼 원하는 값을 선택해서 조회"입니다. 첫 번째 쿼리에 대한 데이터는 이렇게 되어있습니다 지연로딩은 프록시 객체를 만들어서 해당 엔티티의 필드를 사용할 때 DB에서 엔티티를 조회하는 것인데, 바로 DTO를 조회하는 것은 JOIN된 DB 값에서 member의 이름, delivery address 을 바로 뽑아서 값을 가져오기 때문에 JPA에서 엔티티를 조회하지 않아도 값을 알 수 있으며,  다른 select 쿼리가 나가지 않게 되는걸까요?

JPA 사용할 시에는 테스트 데이트를 어떻게 작성해야 하나요? 소스코드 : https://github.com/AmyLim328/springboot-jpa-jpashop  

주문 취소 실행이 안돼요.  소스코드 : https://github.com/AmyLim328/springboot-jpa-jpashop

제가 이해하기로는  member.setName() 할 때 flush가 발생해서 sql이 db에 전송되고 commit()으로 db에 반영되는 것으로 이해했는데요.   member.setName() 이후에 em.datach()를 해주면 sql조차 날아가지 않는 것으로 보입니다.   그럼 flush 단계에서 무슨 일이 일어나는 것이고 sql이 언제 db로 전송되는 것인지 궁금해서요...   혹시 제 이해가 틀린건가요?

fileJobConfiguration에서는 정상적으로 데이터가 product에 적재됩니다. 하지만 다음 apiJob을 통해 실행시키면 (--job.name=apiJob requestDate=20220121)   ApiStepConfiguration에서 itemReader 실행과정중에 AbstractStep에서 catch구문으로 접근하면서 아래와 같이 발생합니다. api연동하기전에 먼저 발생한거여서 다음 강의를 쫓아갈수가 없네요 ㅠㅠ   진행상황 : ProductVO[] productList = QueryGenerator.getProductList(dataSource); 를 통해 type 사이즈 3개는 정상적으로 가져옴. itemReader에서 id, name, price는 모두 null이라서 그런건지... 강의에서는 저부분은 무시했던거 같아서요.