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https://www.tsingfun.com/it/tech/1384.html 

浅谈服务器单I/O线程+工作者线程池模型架构及实现要点 - 更多技术 - 清泛...

... 这种架构主要是基于I/O多路复用的思想(主要是epoll,select/poll已过时),通过单线程I/O多路复用,可以达到高效并发,同时避免了多线程I/O来回切换的各种开销,思路清晰,易于管理,而基于线程池的多工作者线程,又可以...
https://www.tsingfun.com/it/tech/1715.html 

Discuz 证件类型下拉框不显示的解决方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术

... 0, '证件类型', '身份证 护照 驾驶证等', 0, 0, 0, 0, 0, 0, 0, 'select', 0, '身份证\n护照\n驾驶证', ''); 执行后更新缓存再看前台页面,证件那类型下拉框是不是出来了?是不是很神奇? 前台程序代码没得问题的,放心使用! 找到文...
https://www.tsingfun.com/it/tech/2169.html 

OS X10.9 环境下部署 QT5.3.1 常见的编译问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术

... 或 1 sudo -i xcode-select -switch /Applications/Xcode6-Beta6.app/Contents/Developer 2、:-1: error: Could not resolve SDK path for 'macosx10.8' ###export SDKROOT=/Applications/Xcode6-Beta6.app/Contents/Developer/Platforms/Mac...
https://bbs.tsingfun.com/thread-635-1-1.html 

采花大盗速成秘籍之YQL - 人工智能(AI) - 清泛IT论坛,有思想、有深度

...手了,打开YQL Console,运行如下代码即可获得相关数据:select * from html where url='http://www.dangdang.com/' and xpath='//ul[@id="homepage_promotion_count_ul"]/li/p[@class="name"]/a'通过指定XPath,就能得到想要的数据,如果不熟悉XPath,...
https://bbs.tsingfun.com/thread-351-1-1.html 

mysql实现split分割字符串(length, SUBSTRING_INDEX, substring) - 爬虫/...

...,从pos起直到结束 以下通过一个例子查看效果: 代码:SELECT SUBSTRING_INDEX(contentid, '-', 1) first, substring(contentid, 2+length(SUBSTRING_INDEX(contentid, '-', 1))) second, contentid FROM `table_xxx`
https://bbs.tsingfun.com/thread-1015-1-1.html 

安卓中PrimaryColor、SecondaryColor、AccentColor的区别 - App Inventor 2...

...控件颜色,比如FloatingButton、TextField、Cursor、ProgressBar、Selection、Links等具体交互性的颜色。 附上Android Material设计图的Color说明
https://bbs.tsingfun.com/thread-617-1-1.html 

Linq 多字段排序,二次排序 - .NET(C#) - 清泛IT论坛,有思想、有深度

Linq:ordered = source.OrderByDescending( t => t.f1 ).ThenBy( t => t.f2 ); 类似SQL:select * from t1 order by f1 desc ,f2 asc 这种写法里 OrderBy、ThenBy 是升序的,OrderByDescending、ThenByDescending 是降序的。
https://bbs.tsingfun.com/thread-2761-1-1.html 

原版安卓模拟器启动失败:GPU Driver Issue - App Inventor 2 离线版 - 清...

Some users have experienced emulator stability issues with this driver version. As a result, we're selecting a compatibility renderer. Please check with your manufacturer to see if there is an updated driver available. gpt 回答,电脑太旧,不支持现代安卓模拟器:
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UITableView is starting with an offset in iOS 7

...all your wanted UIViewControllers in InterfaceBuilder, on UIViewController selected object inspector: For more details: Submit your iOS 7 apps today. iOS 7 UI Transition Guide > Appearance and Behavior share ...
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Member initialization while using delegated constructor

...tializer; the constructor is a delegating constructor, and the constructor selected by the is the target constructor. [...] You can work-around this by defining the version of the constructor that takes arguments first: Tokenizer::Tokenizer(std::stringstream *lines) : lines(lines) { } and th...