[正则表达式] 正则表达式之道(A Tao of Regular Expressions)>> 我们将在如下的章节中利用一些例子来解释正则表达式的用法,绝大部分的例子是基于vi中的文本替换命令和grep文件搜索命令来书写的,不过它们都是比较典型的例子,其中的概念可以在sed、awk、perl和其他支持正则表达式的编程语言中使用。你可以看看不同工具中的正则表达式这一节,其中有一些在别的工具中使用正则表达式的例子。还有一个关于vi中文本替换命令(s)的简单说明附在文后供参考。
[PageRank, google] How Google Finds Your Needle in the Web''s Haystack>> Brin and Page introduced Google in 1998, a time when the pace at which the web was growing began to outstrip the ability of current search engines to yield useable results. At that time, most search engines had been developed by businesses who were not interested in publishing the details of how their products worked. In developing Google, Brin and Page wanted to 'push more development and understanding into the academic realm.' That is, they hoped, first of all, to improve the design of search engines by moving it into a more open, academic environment. In addition, they felt that the usage statistics for their search engine would provide an interesting data set for research. It appears that the federal government, which recently tried to gain some of Google's statistics, feels the same way.
[SQL_Server, 性能] SQL Server Best Practices>> Get the real-world guidelines, expert tips, and rock-solid guidance to take your SQL Server implementation to the next level. Drawing on the extensive experience and expertise from respected developers and engineers at Microsoft as they walk you through the specifics on solving particularly difficult issues.