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rt-thread中MSH_CMD_EXPORT()函数的实现原理-const char __fsym_##cmd##_name[] RT_SECTION(“.rodata.name“) = #cmd

constchar_fsym##cmd##_name[]RT_SECTION(".rodata.name")=#cmd学习一下这行代码对这行代码里面的__fsym双#,RT_SECTION这些都不理解#defineRT_SECTION(x)attribute((section(x)))这行代码的__attribute__((section(x)))又是什么意思???学习结论:把__fsym_##cmd##_name[]这个变量放置到名为".rodata.name"的段中attribute((section(x)))使用详解----精品那么问题来了,使用section将变量放到我们自定义的输入段

npm info: node: --openssl-legacy-provider is not allowed in NODE_OPTIONS

[INFO]---frontend-maven-plugin:1.9.1:yarn(yarninstall)@jhonline---[INFO]Running'yarn'inC:\Users\Developer_T\IdeaProjects\OpenSource\jhipster-online[INFO]node:--openssl-legacy-providerisnotallowedinNODE_OPTIONS[INFO]------------------------------------------------------------------------[INFO]BUILDFA

npm info: node: --openssl-legacy-provider is not allowed in NODE_OPTIONS

[INFO]---frontend-maven-plugin:1.9.1:yarn(yarninstall)@jhonline---[INFO]Running'yarn'inC:\Users\Developer_T\IdeaProjects\OpenSource\jhipster-online[INFO]node:--openssl-legacy-providerisnotallowedinNODE_OPTIONS[INFO]------------------------------------------------------------------------[INFO]BUILDFA

springboot应用程序不打印Info日志

问题:项目中自己写的代码不打印info日志,但是框架中的info日志都可以打印。问题原因:日志配置文件错了,由于jar依赖问题,程序实际使用的是log4j,但是日志配置文件却是log4j2的配置文件。解决办法:删除maven中引入log4j的jar包,添加log4j2的jar包。排查思路:slf4j绑定时,会查找org.slf4j.impl.StaticLoggerBinder实现了,搜索一下项目中有几个StaticLoggerBinder类,就能确实使用的日志框架了。(注意:如果同时有多个StaticLoggerBinder类,slf4j会在启动日志的开头打印出有配置问题,控制台上是红色字体

springboot应用程序不打印Info日志

问题:项目中自己写的代码不打印info日志,但是框架中的info日志都可以打印。问题原因:日志配置文件错了,由于jar依赖问题,程序实际使用的是log4j,但是日志配置文件却是log4j2的配置文件。解决办法:删除maven中引入log4j的jar包,添加log4j2的jar包。排查思路:slf4j绑定时,会查找org.slf4j.impl.StaticLoggerBinder实现了,搜索一下项目中有几个StaticLoggerBinder类,就能确实使用的日志框架了。(注意:如果同时有多个StaticLoggerBinder类,slf4j会在启动日志的开头打印出有配置问题,控制台上是红色字体

IDEA运行selenium程序提示错误:Exception in thread “main“ org.openqa.selenium.SessionNotCreatedException:

SLF4J:Failedtoloadclass"org.slf4j.impl.StaticLoggerBinder".SLF4J:Defaultingtono-operation(NOP)loggerimplementationSLF4J:Seehttp://www.slf4j.org/codes.html#StaticLoggerBinderforfurtherdetails.StartingChromeDriver100.0.4896.60(6a5d10861ce8de5fce22564658033b43cb7de047-refs/branch-heads/4896@{#875})onpo

IDEA运行selenium程序提示错误:Exception in thread “main“ org.openqa.selenium.SessionNotCreatedException:

SLF4J:Failedtoloadclass"org.slf4j.impl.StaticLoggerBinder".SLF4J:Defaultingtono-operation(NOP)loggerimplementationSLF4J:Seehttp://www.slf4j.org/codes.html#StaticLoggerBinderforfurtherdetails.StartingChromeDriver100.0.4896.60(6a5d10861ce8de5fce22564658033b43cb7de047-refs/branch-heads/4896@{#875})onpo

报错:Only the original thread that created a view hierarchy can touch its views.

报错:Log:onCrashed()–>android.view.ViewRootImpl$CalledFromWrongThreadException:Onlytheoriginalthreadthatcreatedaviewhierarchycantouchitsviews.报错原因:一般在主线程操作UI,而此次有可能在子线程里操作了UI解决方案:在代码中找到涉及UI操作的代码,看它是在哪个线程里进行操作。为里便于查看是在主线程还是子线程,可用以下方法判别:1、查看当前线程idlongid=Thread.currentThread().getId();2、查看当前线程名字Stringnam

报错:Only the original thread that created a view hierarchy can touch its views.

报错:Log:onCrashed()–>android.view.ViewRootImpl$CalledFromWrongThreadException:Onlytheoriginalthreadthatcreatedaviewhierarchycantouchitsviews.报错原因:一般在主线程操作UI,而此次有可能在子线程里操作了UI解决方案:在代码中找到涉及UI操作的代码,看它是在哪个线程里进行操作。为里便于查看是在主线程还是子线程,可用以下方法判别:1、查看当前线程idlongid=Thread.currentThread().getId();2、查看当前线程名字Stringnam

解决pip安装pygame提示python setup.py egg_info did not run successfully.│ exit code: 1错误

一、问题描述当使用命令【pipinstallpygame】进行安装时提示【Preparingmetadata(setup.py)...errorerror:subprocess-exited-with-error×pythonsetup.pyegg_infodidnotrunsuccessfully.│exitcode:1╰─>[77linesofoutput]】报错信息如下图所示: