안녕하세요! 좋은강의 너무잘보고있습니다! 다름이아니라 i를 전역변수로 선언했을때 값이  계속 1로나와서 질문드립니다. 브레이크포인트걸어서 원인을 파악하려고해도 모르겠어서 질문드립니다.. 이하코드는 i가 전역인것제외 강사님의 코드와 일치합니다   int map[21][21], n, cnt = 0, ch[21], i; void DFS(int x) { if (x == n) { cnt++; } else { for (i = 1; i <= n; i++) { if (map[x][i] == 1 && ch[i] == 0) { ch[i] = 1; DFS(i); ch[i] = 0; }   } } } int main() { // #64 경로탐색(DFS)   int m, a, b; cin >> n >> m; for (i = 1; i <= m; i++) { cin >> a >> b; map[a][b] = 1; } ch[1] = 1; DFS(1); cout << cnt; }  

항상 친절한 답변 감사드립니다!! 또다른 질문이 있습니다. 1. 윈도우 사용할때 아나콘다 설치하면 아나콘다 prompt라는게 있던데 이거는 아나콘다 프로그램을 명령어로(UI가 아닌) 제어하는 터미널이라고 이해하면 되는 것일까요?   2. anaconda powershell prompt 와 anaconda prompt는 전자가 관리자 권한으로 하는 것이고 후자는 사용자 모드인 것인가요? 3. 다음강의 내용이긴한데 소프트 링크에서 link data가 원본 파일의 경로를 저장하고 있다고 했는데 c언어에서 포인터랑 비슷한 개념으로 이해하면 될까요?  

아래는 제가 강의를 듣고 임의로 만들어본 예제입니다. concurrentQueue를 custom 큐로 만들어주면 잘 동작하는 반면 global()을 사용하면 배리어가 동작하지 않았습니다. 왜 이런건가요? import Foundation var shared: Int = 0 let group = DispatchGroup() let concurrentQueue = DispatchQueue(label: "com.raywenderlich.number.isolation", attributes: .concurrent)   for _ in (1...30) {   concurrentQueue.async(group: group) {       print(shared, terminator: "")   } } concurrentQueue.async(group: group, flags: .barrier) {     print("")     print("Barrier In")     shared += 1     sleep(3)     print("Barrier Out") } for _ in (1...30) {     concurrentQueue.async(group: group) {         print(shared, terminator: "")     } }   group.wait()  

안녕하세요. 제로초님강의를 듣다, a태그에 noopener, noreferrer에 대해 말씀주셨는데, 해당 속성에 관해서 전에 정리한 글이 있어 공유 드립니다.https://nuhends.tistory.com/107

혹시 NESTJS의 CQRS 패턴과 graphql(with dataloader and federation) 강의도 해주실 수 있나요??

안녕하세요 기선님, 좋은 강의를 해주셔서 감사합니다. 다름이 아니라, event 의 limit을 integer가 아닌 string으로 요청을 보냈을 때, @ModelAttribute 로 요청 파라미터로 보낼 때는 데이터바인딩 에러를 감지해서 BindingResult에 에러가 담겼는데, @RequestBody 로 요청 바디로 보낼때는 BindingResult에 에러가 담기지 않고, 400 에러를 발생시켰습니다. 제 예상으로는 HttpMessageConverter에서 데이터 변환을 할 때 발생하는 에러는 BindingResult에 담기지 않는 것 같은데, 이러한 바인딩 에러를 핸들러에서 받아서 처리할 수 있는 방법이 있을까요? 그리고 @RequestBody와 함께 사용하는 BindingResult는 Validation 체크에 대한 에러만 담기는 건지 궁금합니다.   ==테스트 코드== @RestController public class TestController { @PostMapping("/events/ma") public Event maEvent(@ModelAttribute Event event, BindingResult bindingResult) { return event; } @PostMapping("/events/rb") public Event rbEvent(@RequestBody Event event, BindingResult bidningResult) { return event; } } ============== @RunWith(SpringRunner.class) @SpringBootTest @AutoConfigureMockMvc public class TestControllerTest { @Autowired MockMvc mockMvc; @Test public void createEvent() throws Exception { String json = "{\"name\":\"juni\",\"limit\":\"juni\"}"; mockMvc.perform(post("/events/rb") .contentType(MediaType.APPLICATION_JSON) .content(json)) .andDo(print()) .andExpect(status().isBadRequest()) ; System.out.println("==============================="); mockMvc.perform(post("/events/ma") .param("name", "juni") .param("limit", "juni")) .andDo(print()) .andExpect(status().isOk()) ; } } ===================== public class Event { private String name; private Integer limit; public String getName() { return name; } public void setName(String name) { this.name = name; } public Integer getLimit() { return limit; } public void setLimit(Integer limit) { this.limit = limit; } }

gst 치는이유 알고싶습니다.

강의 시간 12:00 에서 $('.menu li') 로 선택자를 지정하시면서 <li></li>구문 전체를 클릭하는 걸로 설명을 해주셨는데, 저는 MENU-1과 MENU-2에만 마우스 커서가 가면 되는 게 아닐까 싶어서 $('.menu li > a') 이렇게도 코딩을 해봤더니 작동이 안되더라고요. 왜 안되는 건지 궁금합니다. 선택자는 메뉴 뿐만 아니라 서브메뉴까지 선택을 해주어야 뒷 부분에서 요소선택과 메서드를 작성하여 slideDown, children 등을 적용시킬 수 있기 때문에 .menu li 로 포괄적으로? 선택을 해야 하는 건가요?

  안녕하세요. lock이 2번 잡혀 있어서 궁금한 점이 있습니다.   SendForEach에서 lock이 잡혀있는데, Session에 있는 Send를 받은 곳에서도 lock을 거는 이유가 무엇인가요?

    0   git init 부터 막혔는데 해결법 계속 찾고 있는데 뭐가 문제일까요..?   git : 'git' 용어가 cmdlet, 함수, 스크립트 파일 또는 실행할 수 있는 프로그램 이름으로 인식되지 않습니다. 이름이 정확한지 확인하고 경로가 포함된 경우 경로가 올바른지 검증한 다음 다시 시도하십시오. 위치 줄:1 문자:1 + git init + ~~~

github ID: gtanopal email: round8421robin@gmail.com 입니다 :)

bird 애니메이션 파트 강의 입니다.   for i in 1...birdTexture.textureNames.count     범위를 지정해주는 부분에서 오류가 납니다. (오류 내용) thread 1: Fatal error: Range requires lowerBound <= upperBound       1...제한 값(bird~count) 이 코드에서 오류가 나는데요 무슨 문제일까요       작성한 코드       func createBird() {           let birdTexture = SKTextureAtlas(named: "Bird")                      let bird = SKSpriteNode(imageNamed: "bird")           bird.position = CGPoint(x: self.size.width / 2, y: self.size.height / 2)           bird.zPosition = 4           self.addChild(bird)                                 var aniArray = [SKTexture]()           for i in 1...birdTexture.textureNames.count {               aniArray.append(SKTexture(imageNamed: "bird\(i)"))           }           let flyingAnimation = SKAction.animate(with: aniArray, timePerFrame: 0.1)           bird.run(SKAction.repeatForever(flyingAnimation))       }

안녕하세요! 세션쿠키 이용할때 uuid를 사용하는데 이게 동일할 확률이 매우매우 낮아서 브라우저에서 값을 변경해도 문제가 없었다는걸 수업에서 배웠습니다. 강좌에서는  f12눌러서 쿠키값 변경해보는 내용이 있었는데요. 이걸 컴퓨터 매크로 같은걸 사용해서 매우빠르게 돌려도 문제가 없는건가요? 매크로 자동화같은거 돌리면 매우빨라서 하나쯤 걸릴거 같아서 질문드립니다. 물론 안되겠죠?

어떻게든 혼자 해보려고했는데 도저히 안되서 글남깁니다 ㅜ addItemV3 작성후 http://localhost:8080/validation/v2/items/add 저장버튼을 누르면 Whitelabel Error Page status=500 뜨더라구요 v3부분 주석처리하면 다시 문제없이 작동되는데 도저히 이유를 모르겠어서 글남깁니다      2021-12-24 11:34:36.250  INFO 24340 --- [nio-8080-exec-5] h.i.w.v.ValidationItemControllerV2       : errors = org.springframework.validation.BeanPropertyBindingResult: 3 errors Field error in object 'item' on field 'itemName': rejected value []; codes [required.item.itemName]; arguments []; default message [null] Field error in object 'item' on field 'price': rejected value [null]; codes [range.item.price]; arguments [1000,10000000]; default message [null] Field error in object 'item' on field 'quantity': rejected value [null]; codes [max.item.quantity]; arguments [9999]; default message [null] 2021-12-24 11:34:36.254 ERROR 24340 --- [nio-8080-exec-5] org.thymeleaf.TemplateEngine             : [THYMELEAF][http-nio-8080-exec-5] Exception processing template "validation/v2/addForm": Error during execution of processor 'org.thymeleaf.spring5.processor.SpringErrorsTagProcessor' (template: "validation/v2/addForm" - line 37, col 38)   org.thymeleaf.exceptions.TemplateProcessingException: Error during execution of processor 'org.thymeleaf.spring5.processor.SpringErrorsTagProcessor' (template: "validation/v2/addForm" - line 37, col 38) at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:117) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1314) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.OpenElementTag.beHandled(OpenElementTag.java:205) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.TemplateModel.process(TemplateModel.java:136) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:592) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1098) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1072) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.view.ThymeleafView.renderFragment(ThymeleafView.java:366) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:190) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1393) ~[spring-webmvc-5.3.5.jar:5.3.5] at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1138) ~[spring-webmvc-5.3.5.jar:5.3.5] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1077) ~[spring-webmvc-5.3.5.jar:5.3.5] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:962) ~[spring-webmvc-5.3.5.jar:5.3.5] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.5.jar:5.3.5] at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.3.5.jar:5.3.5] at javax.servlet.http.HttpServlet.service(HttpServlet.java:652) ~[tomcat-embed-core-9.0.44.jar:4.0.FR] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.5.jar:5.3.5] at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) ~[tomcat-embed-core-9.0.44.jar:4.0.FR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.44.jar:9.0.44] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.5.jar:5.3.5] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.5.jar:5.3.5] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.5.jar:5.3.5] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.5.jar:5.3.5] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.5.jar:5.3.5] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.5.jar:5.3.5] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1707) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na] Caused by: org.springframework.context.NoSuchMessageException: No message found under code 'required.item.itemName' for locale 'ko'. at org.springframework.context.support.AbstractMessageSource.getMessage(AbstractMessageSource.java:179) ~[spring-context-5.3.5.jar:5.3.5] at org.springframework.context.support.AbstractApplicationContext.getMessage(AbstractApplicationContext.java:1378) ~[spring-context-5.3.5.jar:5.3.5] at org.springframework.web.servlet.support.RequestContext.getMessage(RequestContext.java:725) ~[spring-webmvc-5.3.5.jar:5.3.5] at org.springframework.web.servlet.support.BindStatus.initErrorMessages(BindStatus.java:308) ~[spring-webmvc-5.3.5.jar:5.3.5] at org.springframework.web.servlet.support.BindStatus.getErrorMessages(BindStatus.java:278) ~[spring-webmvc-5.3.5.jar:5.3.5] at org.thymeleaf.spring5.context.webmvc.SpringWebMvcThymeleafBindStatus.getErrorMessages(SpringWebMvcThymeleafBindStatus.java:101) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.processor.SpringErrorsTagProcessor.doProcess(SpringErrorsTagProcessor.java:70) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] ... 52 common frames omitted   2021-12-24 11:34:36.256 ERROR 24340 --- [nio-8080-exec-5] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateProcessingException: Error during execution of processor 'org.thymeleaf.spring5.processor.SpringErrorsTagProcessor' (template: "validation/v2/addForm" - line 37, col 38)] with root cause   org.springframework.context.NoSuchMessageException: No message found under code 'required.item.itemName' for locale 'ko'. at org.springframework.context.support.AbstractMessageSource.getMessage(AbstractMessageSource.java:179) ~[spring-context-5.3.5.jar:5.3.5] at org.springframework.context.support.AbstractApplicationContext.getMessage(AbstractApplicationContext.java:1378) ~[spring-context-5.3.5.jar:5.3.5] at org.springframework.web.servlet.support.RequestContext.getMessage(RequestContext.java:725) ~[spring-webmvc-5.3.5.jar:5.3.5] at org.springframework.web.servlet.support.BindStatus.initErrorMessages(BindStatus.java:308) ~[spring-webmvc-5.3.5.jar:5.3.5] at org.springframework.web.servlet.support.BindStatus.getErrorMessages(BindStatus.java:278) ~[spring-webmvc-5.3.5.jar:5.3.5] at org.thymeleaf.spring5.context.webmvc.SpringWebMvcThymeleafBindStatus.getErrorMessages(SpringWebMvcThymeleafBindStatus.java:101) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.processor.SpringErrorsTagProcessor.doProcess(SpringErrorsTagProcessor.java:70) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1314) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.OpenElementTag.beHandled(OpenElementTag.java:205) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.TemplateModel.process(TemplateModel.java:136) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:592) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1098) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1072) ~[thymeleaf-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.view.ThymeleafView.renderFragment(ThymeleafView.java:366) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:190) ~[thymeleaf-spring5-3.0.12.RELEASE.jar:3.0.12.RELEASE] at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1393) ~[spring-webmvc-5.3.5.jar:5.3.5] at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1138) ~[spring-webmvc-5.3.5.jar:5.3.5] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1077) ~[spring-webmvc-5.3.5.jar:5.3.5] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:962) ~[spring-webmvc-5.3.5.jar:5.3.5] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.5.jar:5.3.5] at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.3.5.jar:5.3.5] at javax.servlet.http.HttpServlet.service(HttpServlet.java:652) ~[tomcat-embed-core-9.0.44.jar:4.0.FR] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.5.jar:5.3.5] at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) ~[tomcat-embed-core-9.0.44.jar:4.0.FR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.44.jar:9.0.44] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.5.jar:5.3.5] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.5.jar:5.3.5] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.5.jar:5.3.5] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.5.jar:5.3.5] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.5.jar:5.3.5] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.5.jar:5.3.5] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1707) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na] at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.44.jar:9.0.44] at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]  

안녕하세요   addMember 시에 정렬을 위해 사용할 compareTo, compare를 override하셨는데 compareTo, compare는 어디서 누가 호출하나요?   addMember만 했는데 갑자기 compareTo, compare 부분이 호출되어서 정렬되는 게 잘 이해되지 않습니다

동영상 없음

 auto-fill과 auto-fit은 columns에만 해당 하는 건가요?? rows에 적용하면 아무런 반응이 없어서요..

학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요.1. 강의 내용과 관련된 질문을 남겨주세요.2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요.(자주 하는 질문 링크: https://bit.ly/3fX6ygx)3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요.(질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG)질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요.=========================================[질문 템플릿]1. 강의 내용과 관련된 질문인가요? (예/아니오)2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오)3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오)[질문 내용]   회원가입시 오류 발생 때문에 질문 드립니다   Caused by: org.h2.jdbc.JdbcSQLIntegrityConstraintViolationException: NULL not allowed for column "ID"; SQL statement: insert into member (id, name) values (null, ?) [23502-202]이부분같은데  강사님 내용과 똑같이 타이핑 한것 같은데 계속 오류가납니다. javax.persistence.PersistenceException: org.hibernate.exception.ConstraintViolationException: could not execute statement at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154) at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181) at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:188) at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:780) at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:760) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:311) at com.sun.proxy.$Proxy88.persist(Unknown Source) at hello.hellospring.repository.JpaMemberRepository.save(JpaMemberRepository.java:19) at hello.hellospring.service.MemberService.join(MemberService.java:32) at hello.hellospring.service.MemberService$$FastClassBySpringCGLIB$$530c61b7.invoke(<generated>) at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:783) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:753) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:753) at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:698) at hello.hellospring.service.MemberService$$EnhancerBySpringCGLIB$$6cf1ee72.join(<generated>) at hello.hellospring.service.MemberServiceIntegrationTest.회원가입(MemberServiceIntegrationTest.java:32) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:725) at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131) at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149) at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140) at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84) at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115) at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45) at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37) at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104) at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:214) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:210) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:135) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:66) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86) at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86) at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:71) at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38) at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11) at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35) at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235) at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54) Caused by: org.hibernate.exception.ConstraintViolationException: could not execute statement at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:59) at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:37) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99) at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:200) at org.hibernate.dialect.identity.GetGeneratedKeysDelegate.executeAndExtract(GetGeneratedKeysDelegate.java:57) at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:43) at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3279) at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3885) at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:84) at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:645) at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:282) at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:263) at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:317) at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:330) at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:287) at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:193) at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:123) at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:185) at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:128) at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:55) at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:107) at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:774) ... 91 more Caused by: org.h2.jdbc.JdbcSQLIntegrityConstraintViolationException: NULL not allowed for column "ID"; SQL statement: insert into member (id, name) values (null, ?) [23502-202] at org.h2.message.DbException.getJdbcSQLException(DbException.java:508) at org.h2.message.DbException.getJdbcSQLException(DbException.java:477) at org.h2.message.DbException.get(DbException.java:223) at org.h2.message.DbException.get(DbException.java:199) at org.h2.table.Column.validateConvertUpdateSequence(Column.java:365) at org.h2.table.Table.convertInsertRow(Table.java:931) at org.h2.command.dml.Insert.insertRows(Insert.java:167) at org.h2.command.dml.Insert.update(Insert.java:135) at org.h2.command.CommandContainer.executeUpdateWithGeneratedKeys(CommandContainer.java:246) at org.h2.command.CommandContainer.update(CommandContainer.java:167) at org.h2.command.Command.executeUpdate(Command.java:247) at org.h2.server.TcpServerThread.process(TcpServerThread.java:413) at org.h2.server.TcpServerThread.run(TcpServerThread.java:190) at java.base/java.lang.Thread.run(Thread.java:834) at org.h2.message.DbException.getJdbcSQLException(DbException.java:459) at org.h2.engine.SessionRemote.done(SessionRemote.java:611) at org.h2.command.CommandRemote.executeUpdate(CommandRemote.java:237) at org.h2.jdbc.JdbcPreparedStatement.executeUpdateInternal(JdbcPreparedStatement.java:191) at org.h2.jdbc.JdbcPreparedStatement.executeUpdate(JdbcPreparedStatement.java:152) at com.zaxxer.hikari.pool.ProxyPreparedStatement.executeUpdate(ProxyPreparedStatement.java:61) at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeUpdate(HikariProxyPreparedStatement.java) at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:197) ... 109 more 2021-12-24 10:32:34.113 INFO 3428 --- [ionShutdownHook] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default' 2021-12-24 10:32:34.115 INFO 3428 --- [ionShutdownHook] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated... 2021-12-24 10:32:34.122 INFO 3428 --- [ionShutdownHook] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed. Process finished with exit code -1  

비디오구독에 좋아요를 누른 상태에서 댓글에 싫어요를 누르게 되면 비디오에 있는 좋아요 데이터가 사라집니다.   서버쪽에서 console.log로 넘어가는 데이터를 확인해봤는데  [0] { [0]   videoId: '61c280243a1bedecd32d9e36', [0]   userId: '61c2df8beed1a65a0f9c5ea6' [0] } [0] { [0]   commentId: '61c43a09d692002e6c67d902', [0]   userId: '61c2df8beed1a65a0f9c5ea6' [0] }   하나는 비디오 하나는 코멘트로 잘 넘어가고 있는데  여기 코드를 거치면서 videoId 로 넘어간꺼까지 삭제되고 있습니다.   무엇이 문제일까요?   const data = {     commentId: "61c43a09d692002e6c67d902",     userId: "61c2df8beed1a65a0f9c5ea6",   };   Like.findOneAndDelete({ data }).exec((err, DisLikeResult) => {       if (err) return res.status(400), send(err);       res.status(200).json({ success: true, DisLikeResult });     });   이상황에서 왜 videoId 값을 지닌 데이터가 지워지는지 모르겠습니다.

안녕하세요 리스너는 오디오노드으로 만든 소리에만 반응하는거 같은데 SKAction으로 만든 소리에 대해서도 멀어지면 작게 들리는 방법이 있을지 여쭵니다.