Ruby正则表达式实践非贪婪量词
2010-10-12 13:14
531 查看
这里主要是主要非贪婪量词的用法, .+?"的意思是匹配任意字符,直到遇到第一个"
另外是找到匹配的组,如下x[0]
http://content.newrelic.com/railslab/videos/railslab-rightscale-cloud-considerations-070109.mov
http://content.newrelic.com/railslab/videos/railslab-rightscale-cloud-considerations.m4v
http://content.newrelic.com/railslab/videos/railslab-heroku-tools-collaboration.mov
http://content.newrelic.com/railslab/videos/railslab-heroku-tools-collaboration.m4v
http://content.newrelic.com/railslab/videos/railslab-heroku-performance-bp.mov
http://content.newrelic.com/railslab/videos/railslab-heroku-performance-bp.m4v
http://content.newrelic.com/railslab/videos/railslab-heroku-intro-vision.mov
http://content.newrelic.com/railslab/videos/railslab-heroku-intro-vision.m4v
http://content.newrelic.com/railslab/videos/railslab-bbg-jproudman-pt2.mov
http://content.newrelic.com/railslab/videos/railslab-bbg-jproudman-pt2.m4v
http://content.newrelic.com/railslab/videos/railslab-bbg-jproudman-pt1.mov
http://content.newrelic.com/railslab/videos/railslab-bbg-jproudman-pt1.m4v
http://content.newrelic.com/railslab/videos/railslab-productmadness-1.mp3
http://content.newrelic.com/railslab/videos/railslab-productmadness-2.mp3
http://content.newrelic.com/railslab/videos/railslab-cunningham-mastery.m4v
http://content.newrelic.com/railslab/videos/railslab-37signals-imbriaco2.m4v
另外是找到匹配的组,如下x[0]
require 'open-uri' open('http://railslab.newrelic.com/category/masters-interviews') do |f| s="" f.each { |line| s<<line} urls= s.scan(/"(http:\/\/content.newrelic.com\/railslab\/videos\/.+?)"/) urls.each { |x| puts x[0].to_s } end
结果是取得了所有rialslab里masters-interviews系列。
http://content.newrelic.com/railslab/videos/railslab-rightscale-cloud-considerations-070109.mov
http://content.newrelic.com/railslab/videos/railslab-rightscale-cloud-considerations.m4v
http://content.newrelic.com/railslab/videos/railslab-heroku-tools-collaboration.mov
http://content.newrelic.com/railslab/videos/railslab-heroku-tools-collaboration.m4v
http://content.newrelic.com/railslab/videos/railslab-heroku-performance-bp.mov
http://content.newrelic.com/railslab/videos/railslab-heroku-performance-bp.m4v
http://content.newrelic.com/railslab/videos/railslab-heroku-intro-vision.mov
http://content.newrelic.com/railslab/videos/railslab-heroku-intro-vision.m4v
http://content.newrelic.com/railslab/videos/railslab-bbg-jproudman-pt2.mov
http://content.newrelic.com/railslab/videos/railslab-bbg-jproudman-pt2.m4v
http://content.newrelic.com/railslab/videos/railslab-bbg-jproudman-pt1.mov
http://content.newrelic.com/railslab/videos/railslab-bbg-jproudman-pt1.m4v
http://content.newrelic.com/railslab/videos/railslab-productmadness-1.mp3
http://content.newrelic.com/railslab/videos/railslab-productmadness-2.mp3
http://content.newrelic.com/railslab/videos/railslab-cunningham-mastery.m4v
http://content.newrelic.com/railslab/videos/railslab-37signals-imbriaco2.m4v
相关文章推荐
- 正则表达式笔记 3 贪婪、勉强、独占三种匹配量词
- 正则表达式中的贪婪、惰性、支配性的量词
- 正则表达式学习笔记贪婪、惰性和支配量词
- javascript正则表达式 贪婪、惰性和支配量词
- 正则表达式 捕获组,向前引用,零宽度断言,贪婪量词,惰性量词以及支配量词
- 正则表达式中的贪婪、惰性、支配性的量词
- Js 正则表达式 贪婪、惰性和支配量词 (转)
- 正则表达式 捕获组,向前引用,零宽度断言,贪婪量词,惰性量词以及支配量词
- 正则表达式学习笔记(4) 贪婪、惰性和支配量词
- 正则表达式 捕获组,向前引用,零宽度断言,贪婪量词,惰性量词以及支配量词
- 正则表达式学习笔记(4) 贪婪、惰性和支配量词
- 关于正则表达式中贪婪量词与懒惰量词的形象解释
- 简单-正则表达式贪婪与非贪婪模式
- 详细介绍Ruby中的正则表达式
- VIM 用正则表达式,非贪婪匹配,匹配竖杠,竖线:
- 正则表达式的贪婪与懒惰模式
- python中如何使用正则表达式的非贪婪模式示例
- 关于java正则表达式贪婪模式和勉强模式的研究
- 正则表达式(regex) 贪婪模式、懒惰模式
- js 正则表达式 贪婪与惰性