java8中接口可以有默认方法（用default修饰，可以有多个）和静态方法了。publicinterfaceTran{defaultpublicStringgetName(){return"zhangsan";}d

http集成http库https://pub.dartlang.org/packages/http添加依赖dependencies:http:^0.12.0安装flutterpackagesget导入import'package:http/http.d

原文：https://medium.freecodecamp.org/howtomakeresponsivenesssupersimplewithcssvariables8c90ebf80d7f作者：PerHaraldBorgen(https://medium.freecodecamp.org/@perborgen?source

tensorflow下载并运行阿里镜像dockerrunitregistry.cnhangzhou.aliyuncs.com/denverdino/tensorflowbash或较原生方式(直接dockerpulltensorflow/tensorflow被墙，借用)d

配置示例数据分片dataSources:ds0:!!org.apache.commons.dbcp.BasicDataSourcedriverClassName:com.mysql.jdbc.Driverurl:jdbc:mysql://localhost:3306/d

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!(https://userimages.githubusercontent.com/5669954/55214447b8dee000523111e9953a3a171d96c75a.png)1.startOrchestra,WebSocketserverforKOIAppandWebShopjustasyou

安装ROS时sudorosdepinit指令报错：ERROR:cannotdownloaddefaultsourceslistfrom:https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/sources.list.d/20default.list

(1).命令passwdpasswd\k\\l\\u\f\\\d\\e\\nmindays\\xmaxdays\\wwarndays\\iinactivedays\\S\\stdin\\username\　　passwd程序用于更新用户的身

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