Learn how to write a Regular Expression: Learn how to write a Regular Expression: --------------------------------------------------------------- What Regular Expression?
A regular expression is a pattern that can match various text strings, used for validations. Where and when to use Regular Expression? It can be used in the programming languages which supports or has regular expression class as in built or it supports third party regular expression libraries. RegexBuddy: Learn, Create, Understand, Test, Use and Save Regular Expression. Regular-Expressions.info - Regex Tutorial, Examples and Reference - Regexp Patterns. Regular Expression Library.