return은 어느 위치에서나 다 사용이 가능하나요?

안녕하세요.먼저 좋은 강의 감사드립니다. 아래 소스는 matcpy-dev.cu에서 가져온 kernel 함수입니다.global void kernelMatCpy( float* C, const float* A, int matsize, size_t pitch_in_elem ) { register unsigned gy = blockIdx.y * blockDim.y + threadIdx.y; // CUDA-provided index if (gy < matsize) { register unsigned gx = blockIdx.x * blockDim.x + threadIdx.x; // CUDA-provided index if (gx < matsize) { register unsigned idx = gy * pitch_in_elem + gx; // in element C[idx] = A[idx]; } }} 그리고 다음 소스는 transpose-dev.cu에서 가져온 kernel 함수 입니다.global void kernelMatTranspose( float* C, const float* A, unsigned matsize, size_t pitch_in_elem ) { register unsigned gy = blockIdx.y * blockDim.y + threadIdx.y; // CUDA-provided index if (gy < matsize) { register unsigned gx = blockIdx.x * blockDim.x + threadIdx.x; // CUDA-provided index if (gx < matsize) { register unsigned idxA = gy * pitch_in_elem + gx; register unsigned idxC = gx * pitch_in_elem + gy; C[idxC] = A[idxA]; } }} 메모리 접근 관점에서 보면 각 thread별로 A에서 read해서 C에 write하는 동일한 과정으로 보이는데, 결과는 속도 차이가 많이 나는 정확한 원인이 궁금합니다. memory coalescing 때문으로 추정하고 있는데, 맞는 생각일까요?감사합니다.

좋은 강의 덕분에 알차게 열심히 공부하고 있습니다.색인 파트 학습 중인데, 색인 분석이라는 단어가 나와서 문의드립니다. 색인 과정을 아래처럼 정리했는데, 색인 분석이 인덱스 체크와 매핑 체크를 포함하는 것을 말하는 걸까요??? 색인 분석(인덱스 체크 -> 매핑 체크) -> inverted index 생성 -> 프라이머리 샤드에 저장 -> 레플리카 샤드로 복사하는 일련의 과정

실행시 아래와 같은 에러가 발생합니다. 컨테이너 버전은 1.15.0으로 사용하였으며에러 상세내용 아래에 작성하였습니다. 다른 에러부분도 내용이 비슷한듯 합니다.  도움 부탁드립니다. java.lang.NoClassDefFoundError: org/testcontainers/containers/wait/LogMessageWaitStrategy at org.testcontainers.containers.PostgreSQLContainer.<init>(PostgreSQLContainer.java:33) at org.testcontainers.containers.PostgreSQLContainer.<init>(PostgreSQLContainer.java:28) at com.cryptoWebService.infra.AbstractContainerBaseTest.<clinit>(AbstractContainerBaseTest.java:10) at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) at org.junit.platform.commons.util.ReflectionUtils.newInstance(ReflectionUtils.java:513) at org.junit.jupiter.engine.execution.ConstructorInvocation.proceed(ConstructorInvocation.java:56) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131) at org.junit.jupiter.api.extension.InvocationInterceptor.interceptTestClassConstructor(InvocationInterceptor.java:72) at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$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:77) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestClassConstructor(ClassBasedTestDescriptor.java:342) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateTestClass(ClassBasedTestDescriptor.java:289) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.instantiateTestClass(ClassTestDescriptor.java:79) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:267) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$2(ClassBasedTestDescriptor.java:259) at java.base/java.util.Optional.orElseGet(Optional.java:369) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$3(ClassBasedTestDescriptor.java:258) at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:101) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:100) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:65) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$1(NodeTestTask.java:111) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:111) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:79) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:108) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:96) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:75) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:71) at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33) at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:220) at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:53)Caused by: java.lang.ClassNotFoundException: org.testcontainers.containers.wait.LogMessageWaitStrategy at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ... 68 morejava.lang.NoClassDefFoundError: Could not initialize class com.cryptoWebService.modules.main.MainControllerTest at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) at org.junit.platform.commons.util.ReflectionUtils.newInstance(ReflectionUtils.java:513) at org.junit.jupiter.engine.execution.ConstructorInvocation.proceed(ConstructorInvocation.java:56) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131) at org.junit.jupiter.api.extension.InvocationInterceptor.interceptTestClassConstructor(InvocationInterceptor.java:72) 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:77) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestClassConstructor(ClassBasedTestDescriptor.java:342) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateTestClass(ClassBasedTestDescriptor.java:289) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.instantiateTestClass(ClassTestDescriptor.java:79) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:267) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$2(ClassBasedTestDescriptor.java:259) at java.base/java.util.Optional.orElseGet(Optional.java:369) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$3(ClassBasedTestDescriptor.java:258) at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:101) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:100) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:65) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$1(NodeTestTask.java:111) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:111) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:79) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:108) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:96) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:75) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:71) at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33) at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:220) at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:53)java.lang.NoClassDefFoundError: Could not initialize class com.cryptoWebService.modules.main.MainControllerTest at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) at org.junit.platform.commons.util.ReflectionUtils.newInstance(ReflectionUtils.java:513) at org.junit.jupiter.engine.execution.ConstructorInvocation.proceed(ConstructorInvocation.java:56) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131) at org.junit.jupiter.api.extension.InvocationInterceptor.interceptTestClassConstructor(InvocationInterceptor.java:72) at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$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:77) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestClassConstructor(ClassBasedTestDescriptor.java:342) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateTestClass(ClassBasedTestDescriptor.java:289) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.instantiateTestClass(ClassTestDescriptor.java:79) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:267) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$2(ClassBasedTestDescriptor.java:259) at java.base/java.util.Optional.orElseGet(Optional.java:369) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$3(ClassBasedTestDescriptor.java:258) at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:101) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:100) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:65) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$1(NodeTestTask.java:111) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:111) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:79) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:108) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:96) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:75) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:71) at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33) at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:220) at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:53)java.lang.NoClassDefFoundError: Could not initialize class com.cryptoWebService.modules.main.MainControllerTest at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) at org.junit.platform.commons.util.ReflectionUtils.newInstance(ReflectionUtils.java:513) at org.junit.jupiter.engine.execution.ConstructorInvocation.proceed(ConstructorInvocation.java:56) at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131) at org.junit.jupiter.api.extension.InvocationInterceptor.interceptTestClassConstructor(InvocationInterceptor.java:72) at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$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:77) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestClassConstructor(ClassBasedTestDescriptor.java:342) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateTestClass(ClassBasedTestDescriptor.java:289) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.instantiateTestClass(ClassTestDescriptor.java:79) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:267) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$2(ClassBasedTestDescriptor.java:259) at java.base/java.util.Optional.orElseGet(Optional.java:369) at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$3(ClassBasedTestDescriptor.java:258) at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:101) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:100) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:65) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$1(NodeTestTask.java:111) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:111) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:79) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at java.base/java.util.ArrayList.forEach(ArrayList.java:1541) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129) at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127) at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126) at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84) at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:108) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67) at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:96) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:75) at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:71) at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33) at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:220) at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:53) 

13:18 지붕위에 루프컷을 넣어야하는데지붕 겉면이 아니라 계속 안쪽면만 선택이 되어 루프컷이 됩니다.(지붕의 Edit로 모드로 들어갔습니다)

 MyAutoConfiguration에서 ProxyMethods를 false를 줬으니 Tomcat과 DisPatcherServlet이 호출될떄마다 새로 생성되는건가요?? 

안녕하세요.강의 잘 듣고 있습니다. 저는 Mac환경에서 수강중이고,airflow 2.7.1을 사용중입니다. 강의에서 dag을 pull하고 2~3분 정도 기다리면 auto-refresh되어 compose를 재실행하지 않아도 된다고 하셨는데,제 경우엔 auto-refresh가 된 이후에도 새로 추가된 dag이 리스트에 나타나지 않더라구요. 그래서 매번 compose를 재실행하고 있는데,혹시 의심가는 원인이 있다면 말씀해주실 수 있으실까요?구글링을 해봐도 해결방법을 찾기 쉽지 않아서 질문 남깁니다ㅜㅜ

완강하였습니다~!!저의 기존 프로젝트에도 적용해보고 싶어요!! Swift Modern Collection View에서 각 Section 별 item click event 처리(ex, SubViewController로 이동)에 대해서도 추가적으로 강의가 더해지면 더욱 도움될 것 같아요기존 UICollectionView와 동일하게 delegate나 rx의 itemSelected로 item click event 처리를 하면 될지, 구조적으로 조금 다르게 가져가는 것이 좋을지 고민이 되어 질문글 남겨봅니다.감사합니다!!

안녕하세요.강의 자료를 받고 싶습니다.질문 커뮤니티에 찾아보니 2강 JVM 강의에 URL이 나온다고 하는데2강을 3번 정도 들어봤는데 URL를 찾을 수가 없어서 강의 자료가 있는 깃허브 URL 주소를알 수 있을까 이렇게 질문으로 남깁니다.감사합니다. 

안녕하세요 현재 BLE 비콘을 이용한 임베디드 시스템을 개발하고 있습니다.Flutter를 이용하여 포어그라운드 상태에서 BLE 비콘 송신값을 수신받고 이 값을 처리하는 기능까지는 구현 완료했는데, 앱이 꺼진 상태(홈 키를 누른 후 완전 앱을 종료하기, Terminated 상태)에서도 비콘 송신값을 수신받고 이를 처리하는 기능을 추가하고 싶어서 여러가지 알아보고 있는 과정에서 어려움이 있어 질문 남깁니다. 여러 백그라운드 라이브러리를 사용하며 느낀 것은 특정 상황에서만 백그라운드를 사용할 수 있는 것이었는데 혹시 이게 아니라면 어떤 라이브러리를 사용하여 구현해야 하는지 안다면 알려주십시오 ㅠFlutter가 백그라운드를 지원하지 않아 이를 네이티브앱으로 구현해야 하는지,만약 백그라운드를 지원한다면 어떻게 구현해야 하는지위의 두 질문에 답변해주면 감사합니다.. ㅠ

안녕하세요! spacing 관련 토큰 만들어보다가 궁금한 점이 생겨서 질문드립니다. 예제처럼 baseSpaing이 4이며, 4의 배수로 커지는 토큰에서 6이나 10 정도의 spacing 값이 필요하게 되면,{baseSpaing}*1.5 = 6 {baseSpaing}*2.5 = 10이런식으로 만들어도 써도 괜찮은걸까요..?뭔가 4의 배수의 규칙에 어긋나는 느낌인 거 같아서 질문드려봅니다..ㅠ.ㅠ아니면 애초에 baseSpaing 값을 2로 두고 진행하는 게 나은 방안인지 여쭈어 봅니다!

감자님! 안녕하세요. 감자님의 강의 미리보기를 통하여 강좌를 구매하게 되었습니다. 먼저 좋은 강의 만들어주셔서 감사합니다. 다름이 아니라 제가 강좌를 듣고 복습을 하고 싶은데 들으면서 필기할려는 방법으로 하려고 합니다. 그런데 문제는 강좌를 들으며 필기하려다 보니 듣는 시간이 너무 길어지는 것 같습니다. 혹시 감자님이 추천해주실 만한 학습방법이 있을지 여쭤보고 싶습니다.

Mesh에 Camera를 붙일 수 있나요??아니면 아래 선생님 사이트처럼 동영상 대신 해당 위치에 Camera를 셋팅할 수 있나요??답변 부탁드리겠습니다!!!

부정응답 35, 36, 37를 내려면 오또케 검증을 진행하면 되나요

class Member( ... ) { @OneToMany(fetch = FetchType.LAZY, mappedBy = "member") ⬅️Q1:"cascade 없음 이유" val memberRole: List<MemberRole>? = null ⬅️Q2: "null 초기화"(mutableListOf() 누락) } Q1:cascade 미사용:강의 컨샙에 맞춰 쉬운 예제 구성을 목적으로 컬랙션 필드에 Cascade 설정을 안하신게 아닐까 추측했지만, 한편으로 다른 구현방법에 대한 다른이유가 있으신 것인지 강의에 언급되지 않은 부분을 여쭤보고 싶었습니다.Q2:컬랙션 null 초기화:일반적인 JPA 예제에서는 JpaEntity 의 1:N 관계 필드는 Collection 초기화를 하더라구요. null 로 초기화 할 때의 장점 이라던지, 다른 이유가 있는지 궁금해서 남기게 되었습니다.  읽어주셔서 감사합니다.

Fetch join에 있어 궁금한 점이 있어서 남깁니다.Fetch join을 사용할 때 서로 떨어진 테이블끼리도 fetch join을 사용할 수 있는지 궁금합니다.일단 페이징 같은 기능이 없다는 가정하에,예를 들어 Entity 1 - Entity 2가 다대일의 관계이고, Entity 2 - Entity 3이 다대일의 관계로 묶여있다면,select * from Entity1 e1 join fetch e.Entity2 join fetch e.Entity2.Entity3;위와 같이 join fetch e.Entity2.Entity3; 이러한 fetch join 문이 가능한가에 대해서 궁금합니다. 만약 이것이 불가능하다면 저러한 상황에서 Entity2를 기준으로 쿼리를 하는 것 말고 다른 방법으로 최적화 할 수 있는 방법이 있는지 궁금합니다.

async findCatByIdWithoutPassword(id: string): Promise<Cat | null> { const cat = await this.catModel.findById(id).select('-password'); return cat; } 위 함수에서 Pomise의 반환값이 Cat 또는 null인데 cat은 password가 없는 Cat이라서 Cat이라고 할 수 없는데 return을 cat으로 해도 에러가 안나는 이유를 알고 싶습니디.

안녕하세요. 큰돌 강사님, 문제를 풀다가 질문이 생겼습니다. 15683번 "감시" 문제인데요. 이 문제를 저는 아래 방식대로 풀이했습니다. http://boj.kr/7d19fc1e97a44902a3056cd87636f863cctv(vector)에 번호와 위치를 저장합니다. dfs로 각 방향을 모두 정리했습니다. 각각 정해진 dir 방향대로 사각지대의 범위를 지정했습니다. 3-1. ch 함수에서 a 배열을 temp로 복사3-2. 각각 cctv 별로 temp 색칠예제에 나와있는 보기는 모두 정답 입니다만, 문제를 제출하면 런타임 에러가 뜹니다. 이유를 도저히 못 찾겠습니다. 어떤게 문제인지 확인해주시면 감사하겠습니다. ps. 점점 날씨가 쌀쌀해지네요.감기조심하세요!

 docker-compose 에 있는 my-database의 연결app.module.ts에 있는 typeOrmModule에 있는 데이터베이스 연결이 어떤 원리로 작동되는지 궁금합니다. my-database: image: mysql:latest environment: MYSQL_DATABASE: 'mydocker' MYSQL_ROOT_PASSWORD: 'root' ports: - 3306:3306TypeOrmModule.forRoot({ //.env 파일은 모두 string 형태로 인식이 됩니다. 따라서, type과 port에 추가 설정을 해주었습니다. type: mysql, host: "localhost", port: 3306, username: "root", password: "12345678", database: practice, entities: [Board], synchronize: true, logging: true, })

등록 시 화면 페이지는 바뀌는데 바뀌자마자 위와 같은 오류가 떠서 계속 찾아보는데 혼자는 해결하기 어려워 여쭤봅니다 ㅠㅠ 어디가 틀린 걸까요? mutation은 제대로 된 걸 확인했는데 fetch가 안 되네요.폴더 구조는05/boards/new index.js05/boards/products/[productId] index.jsimport { useState } from "react"; import { useMutation, gql } from "@apollo/client"; import { useRouter } from "next/router"; const CREATE_PRODUCT = gql` mutation createProduct( $seller: String $createProductInput: CreateProductInput! ) { createProduct(seller: $seller, createProductInput: $createProductInput) { _id number message } } `; export default function ProductRegPage() { const router = useRouter(); const [seller, setSeller] = useState(); const [name, setName] = useState(); const [detail, setDetail] = useState(); const [price, setPrice] = useState(); const [createProduct] = useMutation(CREATE_PRODUCT); const onClickRegister = async () => { try { const result = await createProduct({ variables: { seller, createProductInput: { name, detail, price, }, }, }); console.log(result); router.push(`/05/boards/products/${result.data.createProduct._id}`); } catch (error) { alert(error.message); } }; const onChangeSeller = (event) => { setSeller(event.target.value); }; const onChangeName = (event) => { setName(event.target.value); }; const onChangeDetail = (event) => { setDetail(event.target.value); }; const onChangePrice = (event) => { setPrice(parseInt(event.target.value)); }; return ( <div> 판매자: <input type="text" onChange={onChangeSeller} /> 상품명: <input type="text" onChange={onChangeName} /> 상품내용: <input type="text" onChange={onChangeDetail} /> 상품가격: <input type="text" onChange={onChangePrice} /> <button onClick={onClickRegister}>상품 등록</button> </div> ); } import { useQuery, gql } from "@apollo/client"; import { useRouter } from "next/router"; const FETCH_PRODUCT = gql` query fetchProduct($productId: ID) { fetchProduct(productId: $productId) { seller name detail price } } `; export default function ProductDetailPage() { const router = useRouter(); console.log(router); const { data } = useQuery(FETCH_PRODUCT, { variables: { productId: router.query.productId }, }); console.log(data); return ( <div> <div>판매자:{data ? fetchProduct?.seller : "loading..."}</div> <div>상품명:{data ? fetchProduct?.name : "loading..."}</div> <div>상품내용:{data ? fetchProduct?.detail : "loading..."}</div> <div>상품가격:{data ? fetchProduct?.price : "loading..."}</div> </div> ); }