Regular Expressions (Regex) for the Absolute Beginner!

This course takes you from zero to a level where you are confident in creating your own regular expressions!

What you will learn

Regular Expressions (Regex) – How to formulate them

How to use regular expressions to search and find almost anything under the sun! (textual data ofcourse 😉 )

Key Concepts in Regular Expressions

Confidence to author Regular Expressions


This course explains the basic concepts of regular expressions and how they could be used for pattern matching to match almost any kind of textual data.

The course is structured in the below manner:

  • Basic Concepts – Metacharacters and their usage.
  • Challenges and Walkthrough – Practical Challenges for you to attempt your skills at Regular Expressions. Detailed walk through of solution. Examples include different kinds of data in table delimited format, json and xml.

By the end of the course, you would be confident to create your own regular expressions!

Post any questions you may have and the instructor will get back to you the soonest!

Happy Learning and All the Best!


What are Regular Expressions?

Regular Expression, or regex or regexp in short, is extremely and amazingly powerful in searching and manipulating text strings, particularly in processing text files. One line of regex can easily replace several dozen lines of programming codes.

Regex is supported in all the scripting languages (such as Perl, Python, PHP, and JavaScript); as well as general purpose programming languages such as Java; and even word processors such as Word for searching texts. Getting started with regex may not be easy due to its geeky syntax, but it is certainly worth the investment of your time.

Regular expression synax varies slightly between languages but for the most part the details are the same. Some regex implementations support slightly different variations on how they process as well as what certain special character sequences mean.




Regular Expressions – Basic Concepts

Regular Expressions – Introduction


Square Brackets and Caret Within

Caret, Dollar Sign, Round Brackets, Curley Brackets


Plus, Star


Question Mark, Back Slash

Challenges and Walkthrough

Challenge 1

Challenge 1 – Walkthrough

Challenge 2

Challenge 2 – Walkthrough

Challenge 3

Challenge 3 – Walkthrough

Challenge 4

Challenge 4 – Walkthrough

Challenge 5

Challenge 5 – Walkthrough

Challenge 6

Challenge 6 – Walkthrough

Challenge 7

Challenge 7 – Walkthrough

Challenge 8

Challenge 8 – Walkthrough

Challenge 9

Challenge 9 – Walkthrough

Challenge 10

Challenge 10 – Walkthrough

Challenge 11

Challenge 11 – Walkthrough

Challenge 12

Challenge 12 – Walkthrough

Challenge 13

Challenge 13 – Walkthrough

Real World Use Cases – Walkthrough

Email Address

Email Address – Walkthrough

IP Address

IP Address – Walkthrough

Bitcoin Address

Bitcoin Address – Walkthrough

URL Address

URL Address – Walkthrough

Extract data from JSON Files

Extract data from JSON Files – Walkthrough

Extract data from XML files

Extract data from XML files – Walkthrough



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