Forem

Regular Expressions

A regular expression (shortened as regex or regexp also referred to as regular expression) is a sequence of characters that specifies a search pattern.

Posts

👋 Sign in for the ability to sort posts by relevant, latest, or top.
Refrex! Capture and non-capture groups in ES2018
Cover image for Refrex! Capture and non-capture groups in ES2018

Refrex! Capture and non-capture groups in ES2018

69
Comments 4
5 min read
Javascript lookaheads and lookbehinds
Cover image for Javascript lookaheads and lookbehinds

Javascript lookaheads and lookbehinds

38
Comments 3
2 min read
VerbalExpressions - RegularExpression made easy
Cover image for VerbalExpressions - RegularExpression made easy

VerbalExpressions - RegularExpression made easy

337
Comments 36
1 min read
Exercise: Making a Simple Regex Engine

Exercise: Making a Simple Regex Engine

48
Comments 3
4 min read
Regex Blah

Regex Blah

32
Comments 3
4 min read
Find, convert and replace dates with Vim substitutions
Cover image for Find, convert and replace dates with Vim substitutions

Find, convert and replace dates with Vim substitutions

17
Comments 3
6 min read
My RegExp nightmare

My RegExp nightmare

28
Comments 27
1 min read
Snake case to camel case and back using regular expressions and Python

Snake case to camel case and back using regular expressions and Python

38
Comments 3
2 min read
My Regex Cheatsheet - 25 Example Regex Rules
Cover image for My Regex Cheatsheet - 25 Example Regex Rules

My Regex Cheatsheet - 25 Example Regex Rules

142
Comments 7
2 min read
Regular expressions: how do they work?

Regular expressions: how do they work?

242
Comments 7
9 min read
JavaScripts Regular Expressions Get More Power
Cover image for JavaScripts Regular Expressions Get More Power

JavaScripts Regular Expressions Get More Power

27
Comments 4
2 min read
TIL: Match unicode letters in regex

TIL: Match unicode letters in regex

15
Comments
2 min read
Exploring the Linguistics Behind Regular Expressions
Cover image for Exploring the Linguistics Behind Regular Expressions

Exploring the Linguistics Behind Regular Expressions

152
Comments 24
10 min read
getting regex in a quick way

getting regex in a quick way

6
Comments
1 min read
What are your code smells and/or best practices with regular expressions?

What are your code smells and/or best practices with regular expressions?

18
Comments 24
1 min read
Learn Regular Expressions using Atom

Learn Regular Expressions using Atom

20
Comments 2
2 min read
Remove all console.log()s using Regex in Atom
Cover image for Remove all console.log()s using Regex in Atom

Remove all console.log()s using Regex in Atom

10
Comments 20
1 min read
The beauty of VerbalExpressions

The beauty of VerbalExpressions

87
Comments 18
1 min read
Java REGEX based scanner
Cover image for Java REGEX based scanner

Java REGEX based scanner

6
Comments
2 min read
How To Build A RegEx
Cover image for How To Build A RegEx

How To Build A RegEx

18
Comments 1
5 min read
My favourite computer science text (OR "how regex works")

My favourite computer science text (OR "how regex works")

3
Comments 2
2 min read
Getting started with Regex
Cover image for Getting started with Regex

Getting started with Regex

10
Comments 1
2 min read
Tutorial: Building a Slack Bot that Writes Custom Queries against your Database

Tutorial: Building a Slack Bot that Writes Custom Queries against your Database

6
Comments
3 min read
Finding Null or Empty String Checks in Java
Cover image for Finding Null or Empty String Checks in Java

Finding Null or Empty String Checks in Java

8
Comments 2
2 min read
Intro to peg.js

Intro to peg.js

6
Comments 3
5 min read
loading...