This tutorial will give a over view of rajex and covers main aspect of rajex.It will clearly explain you how you can use Rajex expression in your project.
Regular expressions (regex or regexp) are extremely useful in extracting information from any text by searching for one or more matches of a specific search pattern (i.e. a specific sequence of ASCII or unicode characters).Rajex can be used in almost all the programming language such as JavaScript, Java, VB, C #, C / C++, Python, Perl, Ruby, Delphi, R, Tcl, and many others.
Regular expressions use both basic and special characters. Basic characters are standard letters, numbers, and general keyboard characters, while all other characters are considered special.Special charecters are
? Question Mark Matches zero or one preceding character.
* Asterisk Matches zero or more preceding characters.