Just what is a regular expression, anyway? Take the tutorial to get the long answer. The short answer is that a regular expression is a compact way of describing complex patterns in texts. You can use them to search for patterns and, once found, to modify the patterns in complex ways. You can also use them to launch programmatic actions that depend on patterns. A tongue-in-cheek comment by programmers is worth thinking about: "Sometimes you have a programming problem and it seems like the best solution is to use regular expressions now you have two problems." regular expressions are amazingly powerful and deeply expressive. That is the very reason writing them is just as error-prone as writing any other complex programming code. It is always better to solve a genuinely simple problem in a simple way when you go beyond simple, think about regular expressions. Tutorial: Using regular expressions
标签： expression the tutorial regular
上传时间： 2013-12-19
上传用户：sardinescn
The jacobi.f program solves the Helmholtz equation on a regular mesh, using an iterative Jacobi method with over-relaxation. Parallelism is exploited in both the solver and the numerical error checking
标签： Helmholtz iterative equation program
上传时间： 2016-04-03
上传用户：杜莹12345
Sams Teach Yourself regular Expressions in 10 Minutes By Ben Forta Publisher : Sams Publishing Pub Date : February 28, 2004 ISBN : 0-672-32566-7 Pages : 192
标签： Sams Expressions Publisher Publishin
上传时间： 2014-08-03
上传用户：dapangxie
Hospital queue is a regular met are very familiar with the phenomenon. It every day one way or another in the form in front of us. For example, patients to hospitals, pharmacies dispensing to patients, patients with transfusion to the infusion room, often need wait To some kind of service.
标签： phenomenon Hospital familiar regular
上传时间： 2013-12-26
上传用户：四只眼
Lex helps write programs whose control flow is directed by instances of regular expressions in the input stream. It is well suited for editor-script type transformations and for segmenting input in preparation for a parsing routine.
标签： expressions instances directed programs
上传时间： 2016-11-16
上传用户：时代电子小智
regular Expressions of Java Tutorial，Java正则表达式教程。
标签： Expressions Tutorial regular Java
上传时间： 2017-02-04
上传用户：水中浮云
regular Expression to Expression Tree
标签： Expression regular Tree to
上传时间： 2017-03-11
上传用户：13517191407
regular Expression to Epsilon-NFA
标签： Epsilon-NFA Expression regular to
上传时间： 2013-12-15
上传用户：dengzb84
经典英文原版PHP教程networking, data structures, regular expressions, math, configuration, graphics, MySQL/PostgreSQL support, XML, algorithms, debugging, optimization...and 650 downloadable code examples, with a Foreword by PHP 5 contributor and Zend Engine 2 co-creator Andi Gutmans!
标签： configuration expressions networking structures
上传时间： 2014-01-28
上传用户：cuibaigao
A sample program to demonstrate the usage of regex() regular expression function of the C language in linux.
标签： demonstrate expression the function
上传时间： 2017-04-02
上传用户：lacsx
