OSCHINA 社区最新讨论话题 |
Posted: 04 Jun 2021 10:08 PM PDT 哪位大佬遇到了这个问题关电脑的时候都还好好的,第二天打开就这样了实在解决不了了,百度找遍了都不合适 Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2021-06-04 22:02:05.600 ERROR 5716 --- [ main] o.s.boot.SpringApplication : Applicat... |
Posted: 04 Jun 2021 11:32 PM PDT a++是先取出持久对象a的一份拷贝,再使持久对象a的值加1,最后返回那份拷贝,而那份拷贝是临时对象(不可以对其取地址),故其是右值; ++a则是使持久对象a的值加1,并返回那个持久对象a本身(可以对其取地址),故其是左值; pFlag和*pFlag都是持久对象(可以对其取地址),是左值; 为什么a++和++a不一样哦?我的理解应... |
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