Prerequisite

Regular expression, in introduction with full of example

There are various flavours of Regular Expressions. All the flavours are 80% common. Some languages provide more elements, functions and keywords for efficient searching. Maximum of them have common regular expression elements. You can test them in various languages as follow.

AWK

    awk ‘/RE/’ filename

JAVA

	boolean b = Pattern.matches("RE", "contents");

PHP

        preg_match_all(‘/RE/’,$contents,$result_array)

PERL
I havn’t gone through PERL syntax. But they are similar to AWK.

C# (.NET)

	Regex pattern=new Regex("RE");
        bool matching = return pattern.IsMatch("Contents");

Common elements are also supported by rich text editor programs like textpad or notepad++.

You can also try Online Tool to test for testing regular expression.

Amit Gupta

Hey! this is Amit Gupta (amty). By profession, I am a Software Eng. And teaching is my passion. Sometimes I am a teacher, as you can see many technical tutorials on my site, sometimes I am a poet, And sometime just a friend of friends...