小编Ram*_*Ram的帖子

请原谅我是VBA的新手.

有时我用

Dim r as Range
r = Range("A1")

其他时候我用

Set r = Range("A1")

有什么不同？什么时候应该使用什么？

从Eclipse运行我的WebApp项目时,它大多数时候都能正常运行.但如果错误地停止服务器,我会在"控制台"视图中将其删除,而不是从"服务器"视图中"停止"服务器.在运行干净的项目时我得到了这个

java.lang.NullPointerException
at org.eclipse.wst.common.componentcore.internal.util.VirtualReferenceUtilities.getDefaultProjectArchiveName(VirtualReferenceUtilities.java:81)
at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getJavaClasspathReferences(J2EEModuleVirtualComponent.java:332)
at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getNonManifestRefs(J2EEModuleVirtualComponent.java:236)
at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getReferences(J2EEModuleVirtualComponent.java:160)
at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getReferences(J2EEModuleVirtualComponent.java:208)
at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getReferences(J2EEModuleVirtualComponent.java:201)
at org.eclipse.jst.common.internal.modulecore.SingleRootUtil.hasConsumableReferences(SingleRootUtil.java:217)
at org.eclipse.jst.common.internal.modulecore.SingleRootUtil.validateSingleRoot(SingleRootUtil.java:165)
at org.eclipse.jst.common.internal.modulecore.SingleRootUtil.isSingleRoot(SingleRootUtil.java:93)
at org.eclipse.jst.common.internal.modulecore.SingleRootExportParticipant.canOptimize(SingleRootExportParticipant.java:84)
at org.eclipse.wst.common.componentcore.internal.flat.FlatVirtualComponent.canOptimize(FlatVirtualComponent.java:136)
at org.eclipse.wst.common.componentcore.internal.flat.FlatVirtualComponent.cacheResources(FlatVirtualComponent.java:118)
at org.eclipse.wst.common.componentcore.internal.flat.FlatVirtualComponent.fetchResources(FlatVirtualComponent.java:101)
at org.eclipse.wst.web.internal.deployables.FlatComponentDeployable.members(FlatComponentDeployable.java:147)
at org.eclipse.wst.server.core.internal.ModulePublishInfo.hasDelta(ModulePublishInfo.java:418)
at org.eclipse.wst.server.core.internal.ServerPublishInfo.hasDelta(ServerPublishInfo.java:443)
at org.eclipse.wst.server.core.internal.Server.hasPublishedResourceDelta(Server.java:1539)
at org.eclipse.wst.server.core.internal.Server$ResourceChangeJob$1.visit(Server.java:214)
at org.eclipse.wst.server.core.internal.Server.visitModule(Server.java:2929)
at org.eclipse.wst.server.core.internal.Server.visit(Server.java:2913)
at org.eclipse.wst.server.core.internal.Server$ResourceChangeJob.run(Server.java:225)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

在启动时,我得到了这个

SEVERE: Error starting static Resources
java.lang.IllegalArgumentException: Document base D:\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\Webapp does not exist or is not a readable directory
    at org.apache.naming.resources.FileDirContext.setDocBase(FileDirContext.java:142)
    at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4319)
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:4488)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
    at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
    at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)

请帮助从中恢复.

我将社区版IntelliJ从版本14升级到15.0.1,以及曾在IDE中运行的TestNG测试给出了这些例外.我该如何解决这些问题？

Exception in thread "main" java.lang.NoClassDefFoundError: org/testng/CommandLineArgs
    at org.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:118)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
Caused by: java.lang.ClassNotFoundException: org.testng.CommandLineArgs
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)

如果需要更多信息,请与我们联系.

我是Erlang的新手.如果我这样做

H = fun(X) -> X*X.

那很好.但是,如果我将该功能移动到模块,它会说"非法表达".例如这个

H = misc_functions:square.

请帮忙.

我有多个spring配置文件.很少有人进行测试.

在整个代码库中,Idea12将所有Autowired bean都突出显示为"有多个XXX类型的bean".

如何配置IDEA以便正确识别要在测试和生产中使用的实例？

为什么这两者会产生不同的结果？

graph.traversal()
   .V().map(__.out("contains"))
.valueMap(true).next(100)

相比

graph.traversal()
   .V().out("contains")
.valueMap(true).next(100)

为什么我更喜欢使用 map 而不是直接调用 .out() 方法？这样我就可以组织我的代码，在那里我可以从方法中获取遍历并“映射”到现有的遍历。

我确实使用 Spring 和 Lombok。
如果没有原型 bean，我们必须传递目标类需要的依赖项。
我们如何将 bean 标记为原型并正确处理依赖 bean 和构造函数参数？

选项 1 - 没有原型 bean

@Component @RequiredArgsConstructor(onConstructor = @__(@Autowired))
public class Consumer {
  private final SomeDependency iDontNeed; // Consumer class doesn't need
  private final SomeDependency2 iDontNeed2;

  public void method() {
    new Processor("some random per request data", iDontNeed, iDontNeed2);
  }
....
@Value @RequiredArgsConstructor
public class Processor {
  private final String perRequestInputData;
  private final SomeDependency iReallyNeed;
  private final SomeDependency2 iReallyNeed2;
}

选项 2 - 原型 bean

@Component @RequiredArgsConstructor(onConstructor = @__(@Autowired))
public …