Regular Expression

In theoretical computer science and formal language theory, a regular expression (abbreviated regex or regexp) is a sequence of characters that forms a search pattern, mainly for use in pattern matching with strings, or string matching, i.e. "find and replace"-like operations. The concept arose in the 1950s, when the American mathematician Stephen Kleene formalized the description of a regular language, and came into common use with the Unix text processing utilities ed, an editor, and grep (global regular expression print), a filter.Each character in a regular expression is either understood to be a metacharacter with its special meaning, or a regular character with its literal meaning.
Posts about Regular Expression
  • Filtering Out Google Analytics Junk to Read Your Numbers Better

    …. Luckily, you can filter out certain types of traffic, so that your numbers don’t get watered down by your own traffic, Web crawlers, or duplicated because of web address letter case discrepancies. Here are three main filters to consider setting as you move forward with a Google analytics strategy. Cutting Out Internal Traffic Every time you and your…

    @ProBloggerin Google- 11 readers -
  • How to Be Awesome At AdWords Scripting

    AdWords scripts provide many ways to take PPC accounts to the next level with a (reasonably) straightforward method of streamlining repetitive tasks. This frees up time and allows the creation of advanced automations that just wouldn’t be possible to implement manually. To unlock the full potential of automation, you need to build an application based on the AdWords API, but ...

    Ian Harris/ Search Engine Journal- 8 readers -
  • 8 Tools I Discovered At #Pubcon 2014

    … or Bing. Cost: Free API: None Website: Keywordtool.io Grepwords.com Grepwords is the only keyword tool that allows for regular expression look-ups and comes with an API. It boasts 180,000,000 keywords from over 30 countries. This tool was first mentioned during the Penalty-Free Link Building session. Because Grepwords allows for regular…

    Search Engine Journalin Social SEO Google Facebook Twitter YouTube- 3 readers -
  • How to Harness the Awesomeness of Google Tag Manager

    … that, if there are 100 other things in the developer’s queue, especially items that directly impact the end customer, it’s very likely that your event tracking request sits at the bottom of implementation priority list. Auto event tracking changes all of this. Introduced in October 2013, auto event tracking allows us to implement event tracking…

    Leslie To/ 3Q Digitalin Google How To's- 12 readers -
  • How Regular Expression Affects SEO

    … This is perhaps one of the things that an average SEO specialist overlooks. Regular Expression is an important part of technical SEO. In this entry, I’ll discuss the basics and uses of Regular Expression. Case Study As an SEO specialist, Regular Expression (or more commonly known as RegEx) is going to be mostly used for mathematically…

    SEO Hacker Blogin SEO How To's- 35 readers -