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Storing Images in PostgreSQL
...this. I've use the Large Object Binary (LOB) format for storing generated PDF documents, some of which were 10+ MB in size, in a database and it worked wonderfully.
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How can I return pivot table output in MySQL?
...ot-Tables-with-MySQL
http://datacharmer.org/downloads/pivot_tables_mysql_5.pdf
https://codingsight.com/pivot-tables-in-mysql/
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How do I keep two side-by-side divs the same height?
...'t say I've ever tested in that :) Good to know though, cheers. (Given its PDF focus I bet it supports some of the print-related features of CSS 2.1 that aren't implemented very well in browsers.)
– Paul D. Waite
Feb 19 '13 at 17:02
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App装到手机上就"失忆"？关于Activity生命周期的7个硬核问答 - A...
...应用中。某些系统级回调（如低内存杀进程）的行为可能与独立App有差异，因为Companion本身也在运行。
• 打包安装的App：是标准的独立Android应用，严格遵循系统生命周期规则。
建议：最终测试一定要打包成APK安装测试，尤...
实现一个简单的服务端推方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...个问题。在这里我们放弃了传统的LAMP技术，转而使用Nginx与Lua来实现。
Modified Long Polling
此方案的主要思路是这样的：使用Nginx作为服务端，通过Lua协程来创建长连接，一旦数据库里有新数据，它便主动通知Nginx，并把相应的...
Objective-C: difference between id and void *
...ocumentation/Performance/Reference/GCD_libdispatch_Ref/GCD_libdispatch_Ref.pdf).
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Render HTML to an image
... available libraries
dom-to-image
wkhtmltoimage (included in the wkhtmltopdf tool)
IMGKit (for ruby and based on wkhtmltoimage)
imgkit (for python and based on wkhtmltoimage)
python-webkit2png
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Pros
Conversion is quite fast most of the time
Cons
Bad rendering
Does not execute javascript...
程序员之网络安全系列（六）：动态密码 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...证的令牌。
** 以上两种方式在生成密码的过程都不需要与服务器通信，所以极大的保证了密码的安全。**
算法的实现
http://tools.ietf.org/html/rfc6238
作者: 王德水
出处：http://deshui.wang
程序员 网络安全 动态密码
Are there any naming convention guidelines for REST APIs? [closed]
...e&more-var-value-pairs
Where {media_type} is one of: json, xml, rss, pdf, png, even html.
It is possible to distinguish the collection by adding an 's' at the end, like:
'users.json' *collection of things*
'user/id_value.json' *single thing*
But this means you have to keep track of where y...
xtreme toolkit pro——CXTPReportControl控件教程 - C/C++ - 清泛网 - 专注C/C++及内核技术
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//m_wndReportCtrl.ShowFooter(TRUE);//显示页脚footer,即界面下边，与header对应
//m_wndReportCtrl.ShowFooterRows(TRUE);//显示页脚行
//m_wndReportCtrl.HeaderRowsAllowEdit(TRUE);//允许编辑HeaderRows
//m_wndReportCtrl.FooterRowsAllowEdit(TRUE);//允许编辑FooterRows
// COL...