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

    … requirements. Excluding Bots and Spiders It can be extremely frustrating to examine your web traffic data, only to see that certain recurring bots and spiders are accountable to a large chunk of the pie. Luckily, Google istaking proactive measures to protect Analytics users from these annoyances. You can opt into Google’s automated bot and spider…

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

    … problems; Russell later modified his own script on the same site to scan for text strings in the page (eg. ‘sorry’, ‘out of stock’, etc). A further extension to that – extremely simple but powerful – would be to replace the static text string that you’re looking for with a regular expression, which can be used with wildcards to match any…

    Ian Harris/ Search Engine Journalin Paid Search How To's- 10 readers -
  • 8 Tools I Discovered At #Pubcon 2014

    One of the things I love most about Pubcon Las Vegas is gathering information about new tools. From sponsors in the Expo area to speakers and following the Twitter stream every year I uncover a few gems. This year most of the tools I heard about were focused on Content Marketing and Keyword Research. Keyword Research Tools KeywordTool.

    Search Engine Journal- 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- 18 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- 36 readers -
Get the top posts daily into your mailbox!