(사진)

이전까지 잘 사용하고 있다가 오늘 과제 제출하려고 실행시키니 아래와 같은 에러가 발생합니다.✘ BackendAPIError: 500 Internal Server ErrorKernel creation has failed.➜ This is an agent-side error. Check the agent status or ask the administrator for help.어떻게 해결할 수 있나요?

강의에 대한 직접적인 질문이 아니라 따로 질문할 곳을 찾으려 했는데 찾지 못해서 피치못하게 강의에다가 질문을 달게 되었습니다. 다름이아니라 제가 평소 공부할 때 필기한 내용들을 블로그에 업로드를 하는데 해당 강의는 유료 강의이다 보니 강의에 나온 코드들을 올리는게 문제가 될 수 있을까 싶어서 질문드렸습니다. 업로드 시에는 강의에서 작성된 코드와 설명해주신 내용들이 주석으로 달려 업로드가 될 것 같습니다. 물론 출처를 표기할 생각이긴 하나 유료 강의이니 충분히 문제가 될 수 있을 것 같아 질문드립니다.

안녕하세요 :-)실행해보았는데 카메라롤 앨범을 선택하면 PhotoCollectionCollectionview에 사진이 중간중간 안나오는데 왜 그럴까요?

모든 강좌에 소리가 안나오는데 원래 소리가 안나오는강좌인가요?음량을 최대로 키워도 안나오고 다른 인프런 강좌의 경우에는 소리가 잘나오는데해결방법이 궁금합니다.

Autoselected keyboard map en-us이렇게만 뜹니다. 어떻게 해결해야 하나요?

'''void initAnimalName(){strAnimal[0] = "monkey";strAnimal[1] = "snake";strAnimal[2] = "lion";strAnimal[3] = "tiger";strAnimal[4] = "pig";strAnimal[5] = "rabbit";strAnimal[6] = "cow";strAnimal[7] = "chicken";strAnimal[8] = "dog";strAnimal[9] = "bird";}'''이 코트에서 모든 등호 밑에 빨간 줄이 생기고 아래와 같이 에러가 뜨는데 어떻게 수정할 수 있을까요?a value of type "const char " cannot be assigned to an entity of type "char "

<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">4.0.0<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.3.RELEASE</version> <relativePath/> <!-- lookup parent from repository --></parent><groupId>com.antMart.com</groupId><artifactId>antMall</artifactId><version>0.0.1-SNAPSHOT</version><name>antMall</name><description>Demo project for Spring Boot</description><properties> <java.version>1.8</java.version></properties><dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <dependency> <groupId>com.h2database</groupId> <artifactId>h2</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.postgresql</groupId> <artifactId>postgresql</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.restdocs</groupId> <artifactId>spring-restdocs-mockmvc</artifactId> <scope>test</scope> </dependency></dependencies><build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins></build><repositories> <repository> <id>spring-snapshots</id> <name>Spring Snapshots</name> <url>https://repo.spring.io/snapshot</url> <snapshots> <enabled>true</enabled> </snapshots> </repository> <repository> <id>spring-milestones</id> <name>Spring Milestones</name> <url>https://repo.spring.io/milestone</url> </repository></repositories><pluginRepositories> <pluginRepository> <id>spring-snapshots</id> <name>Spring Snapshots</name> <url>https://repo.spring.io/snapshot</url> <snapshots> <enabled>true</enabled> </snapshots> </pluginRepository> <pluginRepository> <id>spring-milestones</id> <name>Spring Milestones</name> <url>https://repo.spring.io/milestone</url> </pluginRepository></pluginRepositories>전체 pom.xml 소스 첨부드립니다 .저는 저기서 <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> <scope>test</scope> </dependency>이부분만 넣으면 에러가 와장창 떠버리네요 이유를 모르겠습니다 clean도 해보고 폴더에 가서 maven을 직접 지우고 다시 빌드 해봐도 마찬가지네요 ..좀 알려주세요 .에러내용을 이미지로 첨부드리고 싶었는데 이미지를 올릴수가 없네요 여기는 ..그래서 복사해서 첨부합니다.Description Resource Path Location TypeThe project cannot be built until build path errors are resolved antMall Unknown Java ProblemThe container 'Maven Dependencies' references non existing library 'C:Usersblossom.m2repositoryorgspringframeworkbootspring-boot-starter-web2.0.3.RELEASEspring-boot-starter-web-2.0.3.RELEASE.jar' antMall Build path Build Path ProblemMissing artifact org.yaml:snakeyaml:jar:1.19 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.xmlunit:xmlunit-core:jar:2.5.1 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework.restdocs:spring-restdocs-mockmvc:jar:2.0.1.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework.restdocs:spring-restdocs-core:jar:2.0.1.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework.data:spring-data-jpa:jar:2.0.8.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework.data:spring-data-commons:jar:2.0.8.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework.boot:spring-boot:jar:2.0.3.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework.boot:spring-boot-test:jar:2.0.3.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework.boot:spring-boot-test-autoconfigure:jar:2.0.3.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework.boot:spring-boot-starter:jar:2.0.3.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework.boot:spring-boot-starter-web:jar:2.0.3.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework.boot:spring-boot-starter-tomcat:jar:2.0.3.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework.boot:spring-boot-starter-test:jar:2.0.3.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework.boot:spring-boot-starter-logging:jar:2.0.3.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework.boot:spring-boot-starter-json:jar:2.0.3.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework.boot:spring-boot-starter-jdbc:jar:2.0.3.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework.boot:spring-boot-starter-data-jpa:jar:2.0.3.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework.boot:spring-boot-starter-aop:jar:2.0.3.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework.boot:spring-boot-autoconfigure:jar:2.0.3.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework:spring-webmvc:jar:5.0.7.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework:spring-web:jar:5.0.7.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework:spring-tx:jar:5.0.7.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework:spring-test:jar:5.0.7.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework:spring-orm:jar:5.0.7.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework:spring-jdbc:jar:5.0.7.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework:spring-jcl:jar:5.0.7.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework:spring-expression:jar:5.0.7.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework:spring-core:jar:5.0.7.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework:spring-context:jar:5.0.7.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework:spring-beans:jar:5.0.7.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework:spring-aspects:jar:5.0.7.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.springframework:spring-aop:jar:5.0.7.RELEASE pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.slf4j:slf4j-api:jar:1.7.25 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.slf4j:jul-to-slf4j:jar:1.7.25 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.skyscreamer:jsonassert:jar:1.5.0 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.postgresql:postgresql:jar:42.2.2 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.ow2.asm:asm:jar:5.0.4 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.objenesis:objenesis:jar:2.6 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.mockito:mockito-core:jar:2.15.0 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.jboss.logging:jboss-logging:jar:3.3.2.Final pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.jboss:jandex:jar:2.0.3.Final pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.javassist:javassist:jar:3.22.0-GA pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.hibernate.validator:hibernate-validator:jar:6.0.10.Final pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.hibernate.javax.persistence:hibernate-jpa-2.1-api:jar:1.0.2.Final pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.hibernate.common:hibernate-commons-annotations:jar:5.0.1.Final pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.hibernate:hibernate-core:jar:5.2.17.Final pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.hamcrest:hamcrest-library:jar:1.3 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.hamcrest:hamcrest-core:jar:1.3 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.assertj:assertj-core:jar:3.9.1 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.aspectj:aspectjweaver:jar:1.8.13 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.apache.tomcat.embed:tomcat-embed-websocket:jar:8.5.31 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.apache.tomcat.embed:tomcat-embed-el:jar:8.5.31 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.apache.tomcat.embed:tomcat-embed-core:jar:8.5.31 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.apache.logging.log4j:log4j-to-slf4j:jar:2.10.0 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact org.apache.logging.log4j:log4j-api:jar:2.10.0 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact net.minidev:json-smart:jar:2.3 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact net.minidev:accessors-smart:jar:1.2 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact net.bytebuddy:byte-buddy:jar:1.7.11 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact net.bytebuddy:byte-buddy-agent:jar:1.7.11 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact junit:junit:jar:4.12 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact javax.validation:validation-api:jar:2.0.1.Final pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact javax.transaction:javax.transaction-api:jar:1.2 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact javax.servlet:javax.servlet-api:jar:3.1.0 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact javax.annotation:javax.annotation-api:jar:1.3.2 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact dom4j:dom4j:jar:1.6.1 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact com.zaxxer:HikariCP:jar:2.7.9 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact com.vaadin.external.google:android-json:jar:0.0.20131108.vaadin1 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact com.jayway.jsonpath:json-path:jar:2.4.0 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact com.h2database:h2:jar:1.4.197 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact com.fasterxml.jackson.module:jackson-module-parameter-names:jar:2.9.6 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact com.fasterxml.jackson.datatype:jackson-datatype-jsr310:jar:2.9.6 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact com.fasterxml.jackson.datatype:jackson-datatype-jdk8:jar:2.9.6 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact com.fasterxml.jackson.core:jackson-databind:jar:2.9.6 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact com.fasterxml.jackson.core:jackson-core:jar:2.9.6 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact com.fasterxml.jackson.core:jackson-annotations:jar:2.9.0 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact com.fasterxml:classmate:jar:1.3.4 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact ch.qos.logback:logback-core:jar:1.2.3 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact ch.qos.logback:logback-classic:jar:1.2.3 pom.xml /antMall line 1 Maven Dependency ProblemMissing artifact antlr:antlr:jar:2.7.7 pom.xml /antMall line 1 Maven Dependency ProblemFailed to read artifact descriptor for antlr:antlr:jar:2.7.7org.eclipse.aether.resolution.ArtifactDescriptorException: Failed to read artifact descriptor for antlr:antlr:jar:2.7.7at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:282)at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:198)at org.eclipse.aether.internal.impl.DefaultDependencyCollector.resolveCachedArtifactDescriptor(DefaultDependencyCollector.java:535)at org.eclipse.aether.internal.impl.DefaultDependencyCollector.getArtifactDescriptorResult(DefaultDependencyCollector.java:519)at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:409)at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:363)at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process(DefaultDependencyCollector.java:351)at org.eclipse.aether.internal.impl.DefaultDependencyCollector.doRecurse(DefaultDependencyCollector.java:504)at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:458)at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:363)at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process(DefaultDependencyCollector.java:351)at org.eclipse.aether.internal.impl.DefaultDependencyCollector.doRecurse(DefaultDependencyCollector.java:504)at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:458)at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:363)at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process(DefaultDependencyCollector.java:351)at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:254)at org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies(DefaultRepositorySystem.java:316)at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve(DefaultProjectDependenciesResolver.java:172)at org.apache.maven.project.DefaultProjectBuilder.resolveDependencies(DefaultProjectBuilder.java:215)at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:188)at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:119)at org.eclipse.m2e.core.internal.embedder.MavenImpl.readMavenProject(MavenImpl.java:636)at org.eclipse.m2e.core.internal.project.registry.DefaultMavenDependencyResolver.resolveProjectDependencies(DefaultMavenDependencyResolver.java:63)at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refreshPhase2(ProjectRegistryManager.java:530)at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager$3.call(ProjectRegistryManager.java:492)at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager$3.call(ProjectRegistryManager.java:1)at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:177)at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:151)at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:496)at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:351)at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:298)at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.updateProjectConfiguration0(ProjectConfigurationManager.java:405)at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager$2.call(ProjectConfigurationManager.java:352)at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager$2.call(ProjectConfigurationManager.java:1)at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:177)at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:151)at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:99)at org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:1351)at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.updateProjectConfiguration(ProjectConfigurationManager.java:349)at org.eclipse.m2e.core.ui.internal.UpdateMavenProjectJob.runInWorkspace(UpdateMavenProjectJob.java:77)at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:39)at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)Caused by: org.eclipse.aether.resolution.ArtifactResolutionException: Failure to transfer antlr:antlr:pom:2.7.7 from https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact antlr:antlr:pom:2.7.7 from/to central (https://repo.maven.apache.org/maven2): The operation was cancelled.at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:444)at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:246)at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:223)at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:267)... 41 moreCaused by: org.eclipse.aether.transfer.ArtifactTransferException: Failure to transfer antlr:antlr:pom:2.7.7 from https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact antlr:antlr:pom:2.7.7 from/to central (https://repo.maven.apache.org/maven2): The operation was cancelled.at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.newException(DefaultUpdateCheckManager.java:238)at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.checkArtifact(DefaultUpdateCheckManager.java:206)at org.eclipse.aether.internal.impl.DefaultArtifactResolver.gatherDownloads(DefaultArtifactResolver.java:585)at org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads(DefaultArtifactResolver.java:503)at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:421)... 44 morepom.xml /antMall line 1 Maven Dependency Problem이 에러들이 전부 pom.xml에 jpa 추가하는 부분만 없애면 다 사라지거던요 ..이유를 좀 알수잇을까요

선생님 안녕하세요~ 우선 게임만들기 패키지 전부 재미있게 수강하였고,과제도 전부 수행하였습니다 ^^ 많이 배운 것 같습니다. 좋은 강의 감사합니다. ^^한가지 해결하지 못한 문제가 있는데, 게임 실행시에 규칙적으로 중간중간 속도가 느려지는현상이 발생합니다. 코드의 문제인지 여러가지를 시도해봤는데,, 이러한 문제는 "Game2D("This is my digital canvas!", 1024, 768, false, 2)에서 "true"로 콘솔을 전체하면으로 바꾸고 ,dt값을 좀 빠르게 하여 실행하면 중간중간 느려지는 현상이 사라지더군요..(아니면 전체 속도가 빨라져서 느려지는 현상을 제가 느끼지 못한건지도...)보통 이렇게 속도가 일정하지 않는 현상은 왜 발생하고, 어떤 레퍼런스를 참고하여 문제를해결 할 수 있을까요?? 궁금합니다!!

xcode 를 사용해 프로젝트를 생성했는데, xcode에는 "솔루션 > 프로젝트" 개념 없이 프로젝트 하나 단위로만 생성하고 오픈 가능한거 같은데 이대로 강좌를 계속 진행해 나가도 괜찮을까요?또한 VS2017의 release 빌드가 xcode 의 archive 와 동일한것인지 궁금합니다.

/asciidoc/index.adoc 의 참조하신 영어 원문이 있는 곳을 알았으면 좋겠습니다. 영어로 index.adoc 을 생성할 때, 도움이 될 것 같습니다.

서블릿에서 response.sendRedirect("loginOk.jsp"); 이렇게 했는데.. login.jsp에서 submit하면 자꾸... loginCon으로 넘어갑니다 ..loginOk.jsp 파일명도 같구요.. 왜그런지 모르겠어요 .............................. ㅠㅠ 원인을 모르겠습니다.........

web.xml에서 루트 컨텍스트와 서블릿 컨텍스트 간의 부모 자식관계를 설정하지 않았는데도, 어떻게 디스패처 서블릿에서 루트 컨텍스트의 빈을 찾을 수 있는건가요?

Chapter 1 의 3강 Path 설정 강의가 열리지 않습니다. 아래 에러가 표시되고 있습니다.오류가 발생했습니다. 나중에 다시 시도해 주세요. 재생 ID는 R_TGvXqRgEwS0D5q입니다.자세히 알아보기

폴더구조 부분 듣다 질문이 있어 글을 남기게되었습니다. HistroyModel.js 에 보면 1. add( keyword=''){...} 는 매개변수가 안넘어왔을 때 초기 값을 설정해주는 것으로 보입니다. 다만 바로 아래줄에 keyword.trim()를 사용하셨는데 add의 매개변수로 초기 값을 잡지 않고 if(!keyword) return 아래에 코드를 작성하는 방식에 대해서는 어떻게 생각하시나요? 지금과 같은 경우에는 add(null)을 넘겨주었을 때 Cannot read property 'trim' of null 에러가 발생합니다. null이 넘어올 일이 없다고 봐야할까요? 매개변수에 초기값을 설정해두는 부분이 의미하는 바가 궁금합니다. this.data = [{keyword, date}, ...this.data] 관련하여 data.push({keyword,date}) 이것의 차이가 있을까요? 어떤 이점이 별도로 있는 부분인지 궁금합니다.

baseball_game.py 가 terminal 에서 python3 baseball_game.py 를 입력하면 정상작동합니다. 그런데 막상 제출하려고 하니 이런 에러가 계속 뜨네요...terminal 에서 정상작동되는걸 보면 문제가 없는 것처럼 보이는데 왜 계속 에러가 뜬느지 모르겠네요.pip3 install --upgrade backend.ai를 하고 나서 제출하려 해봐도 안됩니다. 어떻게 해야하는지 조언 부탁드립니다. linux_mac ./submit.sh bnbf147593∙ Session token prefix: cd17c26969∙ In the legacy mode, all cases will run serially!Traceback (most recent call last):File "/home/wonsong94/.local/lib/python3.6/site-packages/ai/backend/client/cli/run.py", line 400, in _run_legacytag=tag)File "/home/wonsong94/.local/lib/python3.6/site-packages/ai/backend/client/base.py", line 21, in _methodreturn cls.session.worker_thread.execute(coro)File "/home/wonsong94/.local/lib/python3.6/site-packages/ai/backend/client/session.py", line 64, in executeraise resultFile "/home/wonsong94/.local/lib/python3.6/site-packages/ai/backend/client/session.py", line 48, in runresult = loop.run_until_complete(coro)File "/usr/lib/python3.6/asyncio/base_events.py", line 473, in run_until_completereturn future.result()File "/home/wonsong94/.local/lib/python3.6/site-packages/ai/backend/client/kernel.py", line 107, in get_or_createasync with rqst.fetch() as resp:File "/home/wonsong94/.local/lib/python3.6/site-packages/ai/backend/client/request.py", line 391, in aenterraise BackendAPIError(raw_resp.status, raw_resp.reason, msg)ai.backend.client.exceptions.BackendAPIError: BackendAPIError(500, 'Internal Server Error', {'type': 'https://api.backend.ai/probs/kernel-creation-failed', 'title': 'Kernel creation has failed.', 'agent-details': {'type': 'https://api.backend.ai/probs/agent-timeout', 'title': None}})During handling of the above exception, another exception occurred:Traceback (most recent call last):File "/home/wonsong94/.local/bin/backend.ai", line 11, in sys.exit(main())File "/home/wonsong94/.local/lib/python3.6/site-packages/click/core.py", line 764, in callreturn self.main(args, kwargs)File "/home/wonsong94/.local/lib/python3.6/site-packages/click/core.py", line 717, in mainrv = self.invoke(ctx)File "/home/wonsong94/.local/lib/python3.6/site-packages/click/core.py", line 1137, in invokereturn _process_result(sub_ctx.command.invoke(sub_ctx))File "/home/wonsong94/.local/lib/python3.6/site-packages/click/core.py", line 956, in invokereturn ctx.invoke(self.callback, ctx.params)File "/home/wonsong94/.local/lib/python3.6/site-packages/click/core.py", line 555, in invokereturn callback(args, **kwargs)File "/home/wonsong94/.local/lib/python3.6/site-packages/ai/backend/client/cli/run.py", line 610, in run_run_cases_legacy()File "/home/wonsong94/.local/lib/python3.6/site-packages/ai/backend/client/cli/run.py", line 574, in _run_cases_legacyclean_cmd, build_cmd, exec_cmd)File "/home/wonsong94/.local/lib/python3.6/site-packages/ai/backend/client/cli/run.py", line 402, in _run_legacyprint_error(e)File "/home/wonsong94/.local/lib/python3.6/site-packages/ai/backend/client/cli/pretty.py", line 141, in print_errortext = ''.join(format_error(exc))File "/home/wonsong94/.local/lib/python3.6/site-packages/ai/backend/client/cli/pretty.py", line 122, in format_erroryield 'nu279c ' + agent_details['title']TypeError: must be str, not NoneType

예제를 보면 injectionBean이 dependenctBean의 생성자, setter로 들어가게 되는데,비교를 equals로 진행하고 있습니다.제가 알기로는 자바의 equals는 클래스의 내용을 비교하고 ==는 주솟값을 비교하는걸로 알고있는데요.dependencyBean에 파라메터로 들어가는 injectionBean은 컨테이너 내부에 있는(메모리에 이미 올라가 있는) 빈이 들어가는거로 생각해서 dependencyBean을 prototype으로 지정하더라도 equals를 하면 true가 나올거라 생각했는데 아니더라구요.왜 이런 결과가 나오는지 이해가 잘 안돼서 설명해 주시면 감사드리겠습니다 ㅜㅜ

안녕하세요. 과제 제출하려고 하는데 계속 오류가 나서 질문 남깁니다.다른 분이 질문해주셨던데 저도 bash submit.sh key 로 과제 제출하려고 하면 아래와 같이 뜹니다.다른 분 질문에 답변 주신 것처럼 uninstall 하고 pip install -U "backend.ai-client~=1.5.0"로 다시 install하고 bash install.sh했는데도 여전히 submit.sh를 하면 아래와 같이 나옵니다.해결 방법 알려주시면 감사하겠습니다~∙ Session token prefix: 9f5562d0b9∙ In the legacy mode, all cases will run serially!Traceback (most recent call last):File "/Users/lea/miniconda3/lib/python3.7/site-packages/ai/backend/client/cli/run.py", line 400, in _run_legacytag=tag)File "/Users/lea/miniconda3/lib/python3.7/site-packages/ai/backend/client/base.py", line 21, in _methodreturn cls.session.worker_thread.execute(coro)File "/Users/lea/miniconda3/lib/python3.7/site-packages/ai/backend/client/session.py", line 64, in executeraise resultFile "/Users/lea/miniconda3/lib/python3.7/site-packages/ai/backend/client/session.py", line 48, in runresult = loop.run_until_complete(coro)File "/Users/lea/miniconda3/lib/python3.7/asyncio/base_events.py", line 573, in run_until_completereturn future.result()File "/Users/lea/miniconda3/lib/python3.7/site-packages/ai/backend/client/kernel.py", line 107, in get_or_createasync with rqst.fetch() as resp:File "/Users/lea/miniconda3/lib/python3.7/site-packages/ai/backend/client/request.py", line 391, in aenterraise BackendAPIError(raw_resp.status, raw_resp.reason, msg)ai.backend.client.exceptions.BackendAPIError: BackendAPIError(500, 'Internal Server Error', {'type': 'https://api.backend.ai/probs/kernel-creation-failed', 'title': 'Kernel creation has failed.', 'agent-details': {'type': 'https://api.backend.ai/probs/agent-timeout', 'title': None}})During handling of the above exception, another exception occurred:Traceback (most recent call last):File "/Users/lea/miniconda3/bin/backend.ai", line 11, in sys.exit(main())File "/Users/lea/miniconda3/lib/python3.7/site-packages/click/core.py", line 764, in callreturn self.main(args, kwargs)File "/Users/lea/miniconda3/lib/python3.7/site-packages/click/core.py", line 717, in mainrv = self.invoke(ctx)File "/Users/lea/miniconda3/lib/python3.7/site-packages/click/core.py", line 1137, in invokereturn _process_result(sub_ctx.command.invoke(sub_ctx))File "/Users/lea/miniconda3/lib/python3.7/site-packages/click/core.py", line 956, in invokereturn ctx.invoke(self.callback, ctx.params)File "/Users/lea/miniconda3/lib/python3.7/site-packages/click/core.py", line 555, in invokereturn callback(args, **kwargs)File "/Users/lea/miniconda3/lib/python3.7/site-packages/ai/backend/client/cli/run.py", line 610, in run_run_cases_legacy()File "/Users/lea/miniconda3/lib/python3.7/site-packages/ai/backend/client/cli/run.py", line 574, in _run_cases_legacyclean_cmd, build_cmd, exec_cmd)File "/Users/lea/miniconda3/lib/python3.7/site-packages/ai/backend/client/cli/run.py", line 402, in _run_legacyprint_error(e)File "/Users/lea/miniconda3/lib/python3.7/site-packages/ai/backend/client/cli/pretty.py", line 141, in print_errortext = ''.join(format_error(exc))File "/Users/lea/miniconda3/lib/python3.7/site-packages/ai/backend/client/cli/pretty.py", line 122, in format_erroryield 'nu279c ' + agent_details['title']TypeError: can only concatenate str (not "NoneType") to str

console.log 해서 cmd에서 확인하는데, 오류는 안나고 console.log도 실행이 안되네요..:(원인이 뭘가요?동영상이랑 똑같이 하고 싶은데.. 뭔가 오류안나고 제대로 실행되가지고 ..확인 부탁드립니다!!

Could not install packages due to an EnvironmentError: [Errno 13] Permission denied: 'C:\Program Files (x86)\miniconda\Lib\site-packages\namedlist.py'Consider using the --user option or check the permissions. 이라는 에러가 도중에 뜨는데 어떻게 해결해야 하나요?ㅠㅠ