这个函数得参数是些什么呢
老师这里为什么一定要用value作为变量,把nick的值赋过去,才会显示吕布,而用name替代value就不行。nick也没看见是赋值给value的呀,在py程序中,nick也只是添加一个nick的变量
老师,这个password,明明没有定义,他为什么要在这里用,中间逗号是分隔什么用的,还是说password,pwd是一整个句,就是类似于input("请输入密码")的作用吗。
为什么吕布没办法显示呢
老师他这个语句意思是输入一个name,然后固定值是uname吗,正常input是需要手动输入内容的,uname就是代替了输入的内容吗
#include<iostream> using namespace std; int main() { int arr[10] = { 1,2,3,4,5,6,7,8,9,10}; cout << "整个数组占用内存空间为:" << sizeof(arr) << endl; cout << "每个元素占用内存为:" << sizeof(arr[0]) << endl; cout << "数组中元素个数为:" << sizeof(arr) / sizeof(arr[0]) << endl; cout << "数组首地址为:" << (int)arr << endl; }
为什么我这里的查看数组首地址使用int进行强转要报错
请问一下老师,这个不会出结果是怎么回事呢?
老师,切片操作讲解好像有问题
multiprocessing Process,current_process multiprocessing Manager (,m_list,m_dict): m_dict[] = m_list.append() __name__ == : Manager() mgr: m_list=mgr.list() m_dict=mgr.dict() m_list.append() p1=Process(=f,=(,m_dict,m_list)) p1.start() p1.join() (m_list) (m_dict
老师,我知道哪里出错了,可是怎么改呢,明明和视频一样的代码,它可以运行,我的却出错
append添加数据的时候明明是先添加新闻1的两个标签,可是第二行却是新闻2对应标签1了,我以为是因为一起commit的问题,我自己测试了下两个新闻分开提交,表显示的还是这个顺序,只有在创建第三个表的时候把新闻放在第二列,顺序才会和append添加的顺序一样,这个顺序怎样应该没什么影响吧
老师,这个怎么改啊
老师我这个是什么问题为啥链接失败 Tue Nov 07 04:20:51 CST 2023 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification. Exception in thread "main" com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet successfully received from the server was 782 milliseconds ago. The last packet sent successfully to the server was 774 milliseconds ago. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:990) at com.mysql.jdbc.ExportControlled.transformSocketToSSLSocket(ExportControlled.java:201) at com.mysql.jdbc.MysqlIO.negotiateSSLConnection(MysqlIO.java:4869) at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1656) at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1217) at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2189) at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2220) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2015) at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:768) at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:385) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:323) at java.sql.DriverManager.getConnection(DriverManager.java:664) at java.sql.DriverManager.getConnection(DriverManager.java:247) at jdbcTest.main(jdbcTest.java:22) Caused by: javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate) at sun.security.ssl.HandshakeContext.<init>(HandshakeContext.java:171) at sun.security.ssl.ClientHandshakeContext.<init>(ClientHandshakeContext.java:101) at sun.security.ssl.TransportContext.kickstart(TransportContext.java:238) at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:394) at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:373) at com.mysql.jdbc.ExportControlled.transformSocketToSSLSocket(ExportControlled.java:186) ... 18 more
这个跟Webpack构建Vue环境有什么联系或区别?
像这种弹窗该咋设置啊,我记得讲过不记得哪节了,能提示一下吗
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