Introduction to Regular Expressions
4.5 (2 ratings)
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23 students enrolled

Introduction to Regular Expressions

Get started with regexps
4.5 (2 ratings)
Course Ratings are calculated from individual students’ ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately.
23 students enrolled
Created by Jimmy Larsson
Last updated 1/2020
English
English [Auto]
Current price: $13.99 Original price: $19.99 Discount: 30% off
5 hours left at this price!
30-Day Money-Back Guarantee
This course includes
  • 1 hour on-demand video
  • 1 article
  • Full lifetime access
  • Access on mobile and TV
  • Certificate of Completion
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What you'll learn
  • Basic knowledge of regular expressions
Course content
Expand all 11 lectures 57:38
+ Bits and pieces of Regexps
8 lectures 50:09

How to search for special characters withescaping.

Special characters and escaping
05:47

The dot (.) is a being used for matching one single character. 

The dot
03:56

Quantifiers like ?, * and + are being used to specify the number of ocurrences of any given character or set of characters

Quantifiers
07:52

With anchors you can glue your search to the beginning or end of a line

Anchors
03:58

A negation is when you search for "anything but" or "not this". 

Negation
05:10

Back referencing is really cool. You can search for anything multiple times dynamically. Hard to explain but I will give it a try, and I am sure that you will fined it useful!

Back referencing
09:00

In this example I will show how to use rexexp to match anything that looks like an ip address.

Example: How to match an ip address
04:13
+ Bonus section
1 lecture 00:29
Bonus lecture - about my other courses
00:29
Requirements
  • A computer with a software that uses regular expressions
Description

This is an introductionary course on regular expressions. In this course you will learn the basics and most common components of regexps. This includes:

  • Back referencing
  • Character sets
  • Negation (how to NOT look for...)
  • Anchors to find what is in the beginning and/or end of the line.
  • And much more!

    "A regular expression, regex or regexp[1] (sometimes called a rational expression)[2][3] is, in theoretical computer science and formal language theory, a sequence of characters that define a search pattern. Usually this pattern is then used by string searching algorithms for "find" or "find and replace" operations on strings."

It will take a lifetime to master Regexps, but only an hour in this course to understand the basics!

Who this course is for:
  • Anyone who needs to understand how Regexps works