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二维码的生成细节及原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...人一同学习之。
关于QR Code Specification，可参看这个PDF：http://raidenii.net/files/datasheets/misc/qr_code.pdf
基础知识
首先，我们先说一下二维码一共有40个尺寸。官方叫版本Version。Version 1是21 x 21的矩阵，Version 2是 25 x 25的矩阵，Version 3...
【App Inventor 2 数据可视化】使用柱状图和饼图收集数据 - App应用开发 - ...
...好，请使用PC浏览器查看），凑合着看吧~
文章转载自：https://mc.dfrobot.com.cn/thread-316532-1-1.html
文章aia源码如下：
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资源地址：https://drive.google.com/drive/f ... 0BGKOaa?usp=sharing（如打不开可以直接在附件中下载）
数据...
HTTPS with Visual Studio's built-in ASP.NET Development Server
...e a way to access Visual Studio's built-in ASP.NET Development Server over HTTPS?
4 Answers
...
How do you use https / SSL on localhost?
... property pages, then start options and assign the start URL - put the new https with the new port (usually 44301 - notice the similarity to port 443) and your project will start correctly from then on.
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【转】用App Inventor 2实现电子围栏功能 - App应用开发 - 清泛IT社区，为创新赋能！
...示动图
侵删，文章来源：https://makelog.dfrobot.com.cn/user-1229.html
Alternate output format for psql
... using PostgreSQL 8.4 on Ubuntu. I have a table with columns c1 through cN . The columns are wide enough that selecting all columns causes a row of query results to wrap multiple times. Consequently, the output is hard to read.
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Linux下部署企业级邮件服务器(postfix + dovecot + extmail) - 开源 & Gith...
...uery OK, 0 rows affected (0.00 sec)
3、安装配置apache
yum install httpd -y
vim /etc/httpd/conf/httpd.conf
注释掉中心主机，启用虚拟主机
添加以下内容：
<VirtualHost *:80>
ServerName mail.huatuo.com
DocumentRoot /var/www/extmail/html/
ScriptA...
What is a bank conflict? (Doing Cuda/OpenCL programming)
...Bank Conflict)
I hope this will help..
this is very good explaination ...
http://www.youtube.com/watch?v=CZgM3DEBplE
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How can I show the name of branches in `git log`?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
App Inventor 2 CustomWebView 拓展：高级版Web浏览器，完美浏览现代Web前...
...ogress)
Event raised when page loading progress has changed.
OnReceivedHttpAuthRequest(id,host,realm)
Notifies that the WebView received an HTTP authentication request.
OnReceivedSslError(errorCode)
Event for OnReceivedSslError
OnScrollChanged(id,scrollX,scrollY,oldScrollX,oldScrollY,can...