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提升大数据分析思想，拥抱大数据未来 - 资讯 - 清泛网 - 专注C/C++及内核技术
...起的革命性数据科学当中，最令人感到兴奋的莫过于能够实时掌握消费者和物联网的动态，但是，这恐怕容易使得企业陷于另一种困境。
日本信息通信技术（ICT）企业美国公司首席信息官尼尔·贾维斯（Neil Jarvis）表示：“企业...
10 款进阶综合应用：业务流程与硬件接入 · App Inventor 2 中文网
...环境采集与告警
连接自有 MQTT 温湿度设备，显示实时值、最近趋势、超限记录与离线状态。 流程与源码
定时浇灌控制台
通过 MQTT 给自有控制器发限时浇灌指令，等待设备确认，并记录超时和停止反馈...
Regular expression that matches valid IPv6 addresses
I'm having trouble writing a regular expression that matches valid IPv6 addresses, including those in their compressed form (with :: or leading zeros omitted from each byte pair).
...
How to sleep for five seconds in a batch file/cmd [duplicate]
Windows's Snipping tool can capture the screen, but sometimes I want to capture the screen after five seconds, such as taking an image being displayed by the webcam. (Run the script and smile at the camera, for example.)
...
程序员用数据思维教你如何追女生 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...们所有的记录都是可以追溯的。
所以利用网络云笔记，实时保存每一次约会的记录，让我们的约会变得有技术保障！
江湖上那些印个回忆录相册什么的小伎俩，在我们这根本不是事儿，我们一键导出就可以了。
记录下来，...
ComponentOpacity 拓展：给任意组件设置、获取透明度 · App Inventor 2 中文网
...和球同样支持
单个功能，即插即用
典型用法：滑动条实时淡入淡出图片、入场动画式的界面渐显、叠加水印式提示文字。
when 滑动条1.PositionChanged(thumbPosition) {
ComponentOpacity1.SetComponentOpacity(图像1, thumbPosition)
}
when 按钮1.Click...
StringUtils 字符串工具扩展：强大的文本处理工具集 · App Inventor 2 中文网
... IoT 参考文档 技术和其他指南 中文网原创 VIP 专享 App教程 入门必读 App上架指南 特色 AI 助手 · 一句话生成 App 鸿蒙 · 一套积木，多端原生打包！ 下载 AI2伴侣 · 安卓/鸿蒙/iO...
Setting up FTP on Amazon Cloud Server [closed]
...at you already have an EC2 instance created and have associated an Elastic IP Address to it.
Step #1: Install vsftpd
SSH to your EC2 server. Type:
> sudo yum install vsftpd
This should install vsftpd.
Step #2: Open up the FTP ports on your EC2 instance
Next, you'll need to open up the F...
How to test which port MySQL is running on and whether it can be connected to?
... I thought to be externally visible, it had to be the machine's own IP address and that 0.0.0.0 means the service is not available from anywhere. Do I have that wrong? I have a box running MySQL, the firewall has 3306 open from any IP address but MySQL is refusing the connection, I thought b...
What is a non-capturing group in regular expressions?
...1).
Let's try some substitutions now. Consider the following text:
Lorem ipsum dolor sit amet consectetuer feugiat fames malesuada pretium egestas.
Now, let's use this dumb regex over it:
\b(\S)(\S)(\S)(\S*)\b
This regex matches words with at least 3 characters, and uses groups to separate th...