1.当extends app 时,可以引入变量,而使用main函数不能引入 extends app main 函数 2. extends app 会延迟加载,使用main函数更加稳定 等区别网络自行搜索 其他不同待补充
Standalone 模式 安装 解压缩flink-1.10.1-bin-scala_2.12.tgz, 进入 conf 目录中。 修改 flink/conf/flink-conf.yaml 文件: 修改 /conf/slaves 文件: 分发给另外两台机子: 启动: 访问 http://localhost:8081 可以对 f...通用协议联盟(Universal Protocal Alliance)已经上线实用型通证 UPT已于2020年3月19...
App in Scala Created by Wang, Jerry on Sep 25, 2015 application里一个object extend了一个App: 通过查看source code的实现能发现App是一个trait,继承了DelayedInit: scala.DelayedInit Classes and objects (but note, not traits) inheriting the智能...
Back-end development, often undertaken by a dedicated development team, is a key sphere in both app and web development. It deals with the server-side functions of web applications, including data management, user authorization, and handling complex algorithms, calculations, and analytics. If your ...