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How can we match a^n b^n with Java regex?
....
Lesson: You can capture inside a lookaround. You can use free-spacing to enhance readability.
Step 3: Refactoring the lookahead into the "loop"
Before we can introduce our counting mechanism, we need to do one modification to our pattern. Currently, the lookahead is outside of the + repetition "l...
What's the fundamental difference between MFC and ATL?
...business. Office 'Document Linking and Embedding' was a main component to enhancing the 'Document Management' features of Office to compete in this space. COM was a core technology invented for application integration, and Document Embedding API's were based on COM. MFC was difficult to use for t...
Get list of passed arguments in Windows batch script (.bat)
...g. %1 %2 %3
%4 %5 ...)
Substitution of batch parameters (%n) has been enhanced. You can
now use the following optional syntax:
%~1 - expands %1 removing any surrounding quotes (")
%~f1 - expands %1 to a fully qualified path name
%~d1 - expands %1 to a drive l...
由12306.cn谈谈网站性能技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...机端浏览也是这个情形）。我查看了一下12306首页的需要下载的总文件大小大约在900KB左右，如果你访问过了，浏览器会帮你缓存很多，只需下载10K左右的文件。但是我们可以想像一个极端一点的案例，1百万用户同时访问，且都...
CentOS+Nginx+PHP+MySQL详细配置(图解) - PHP - 清泛IT论坛，有思想、有深度
...须的，切记！
首先我们把PHP和PHP-FPM下载到同一目录下，此次用的为php-5.3.0.tar.bz2和php-5.3.0-fpm-0.5.12.diff.gz，下载到了同一目录下
#tar xvf php-5.3.0.tar.bz2
#gzip -cd php-5.3.0-fpm-0.5.12.diff.gz | patch -d php-5.3.0 -p1 ...
Difference between Visual Basic 6.0 and VBA
...or difference is that VBA7 has both a 32- and 64-bit version and has a few enhancements to handle the differences between the two, specifically with regards to external API invocations.
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impr...
JBoss vs Tomcat again [closed]
...e you need certain Java EE features beyond the Servlet API, you can easily enhance Tomcat by providing the required libraries as part of your application. For example, if you need JPA features you can include Hibernate or OpenEJB and JPA works nearly out of the box.
How to decide whether to use Tom...
A semantics for Bash scripts?
...liance.
Bash builds upon this base by adding new features and keywords to enhance the POSIX shell. It is nearly compatible with sh, and bash is so ubiquitous that some script authors go years without realizing that a script may not actually work on a POSIXly strict system. (I also wonder how people...
How to detect if JavaScript is disabled?
...I assume that you're trying to decide whether or not to deliver JavaScript-enhanced content. The best implementations degrade cleanly, so that the site still operates without JavaScript. I also assume that you mean server-side detection, rather than using the <noscript> element for an unexpla...
Trim string in JavaScript?
...9+ (in Standards mode only!) http://blogs.msdn.com/b/ie/archive/2010/06/25/enhanced-scripting-in-ie9-ecmascript-5-support-and-more.aspx
Chrome: 5+
Opera: 10.5+
ECMAScript 5 Support Table: http://kangax.github.com/es5-compat-table/
...