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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.

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Getting Started with Regular Expressions

Getting Started with Regular Expressions

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4 min read
How to Build a RegEx Engine in Python (Part 3: TDRDP)

How to Build a RegEx Engine in Python (Part 3: TDRDP)

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Regular expressions in Rust

Regular expressions in Rust

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Rust: Lazy Static Regex

Rust: Lazy Static Regex

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Regex Cheat Sheet

Regex Cheat Sheet

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13 min read
Snippet: Grab lat/lon from Google Maps URL

Snippet: Grab lat/lon from Google Maps URL

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1 min read
Keeping code simple with regular expressions

Keeping code simple with regular expressions

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Regular Expression for match empty string

Regular Expression for match empty string

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How to Build a RegEx Engine in Python (Part 2.1: Python strings)

How to Build a RegEx Engine in Python (Part 2.1: Python strings)

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3 min read
Introducing Regcode - Create Regular Expressions Easily with Code

Introducing Regcode - Create Regular Expressions Easily with Code

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Kotlin Pure Regex Routing Logic

Kotlin Pure Regex Routing Logic

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2 min read
Make your own Markdown Converter (with new Features) - Part 1

Make your own Markdown Converter (with new Features) - Part 1

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How to Build a RegEx Engine in Python (Part 1: The Grammar)

How to Build a RegEx Engine in Python (Part 1: The Grammar)

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3 min read
How to Build a RegEx Engine in Python (Part 2: The Lexer)

How to Build a RegEx Engine in Python (Part 2: The Lexer)

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4 min read
Do you find regexes complex?

Do you find regexes complex?

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4 min read
Comprehensive Guide for not so Regular Expressions

Comprehensive Guide for not so Regular Expressions

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7 min read
Regex: Fix duplicate slashes without affecting protocol

Regex: Fix duplicate slashes without affecting protocol

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1 min read
How to Detect Symbols & spaces With RegEx!

How to Detect Symbols & spaces With RegEx!

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Flags in Regular Expression

Flags in Regular Expression

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Special characters in Regular Expression

Special characters in Regular Expression

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2 min read
Primer on Regexes

Primer on Regexes

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6 min read
preg_replace_callback for Javascript

preg_replace_callback for Javascript

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1 min read
Writing an effective GROK pattern

Writing an effective GROK pattern

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3 min read
Can I get a dash of regular expression in my KQL?

Can I get a dash of regular expression in my KQL?

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1 min read
Looking at Regex in Rust (Addendum)

Looking at Regex in Rust (Addendum)

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4 min read
Regex for Verifying Email Address

Regex for Verifying Email Address

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Accurately Judge Data Types by Using Regex

Accurately Judge Data Types by Using Regex

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Looking at Regex in Rust

Looking at Regex in Rust

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When I prefer not to use Regex ⛞

When I prefer not to use Regex ⛞

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4 min read
Multiline flag in regex

Multiline flag in regex

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1 min read
Regex for email validation in rails

Regex for email validation in rails

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A python regex to validate roman numerals

A python regex to validate roman numerals

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Regex? The Minimum You Need To Know.

Regex? The Minimum You Need To Know.

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5 min read
15 expresiones regulares que te ahorrarán dolores de cabeza como Junior (y Senior)

15 expresiones regulares que te ahorrarán dolores de cabeza como Junior (y Senior)

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9 min read
Regex Cheat Sheet (Javascript Edition)

Regex Cheat Sheet (Javascript Edition)

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2 min read
Fun with C# Regex based Expression calculator

Fun with C# Regex based Expression calculator

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4 min read
Utiliser les expressions régulières pour effectuer des recherches et remplacements en JavaScript

Utiliser les expressions régulières pour effectuer des recherches et remplacements en JavaScript

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Regex: From beginner to BEST on your team in one blog đź‘‘

Regex: From beginner to BEST on your team in one blog đź‘‘

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Parse Name and Address: Regex vs NER, with Code Examples

Parse Name and Address: Regex vs NER, with Code Examples

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Refactoring Ruby with Regex

Refactoring Ruby with Regex

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Regex - underrated or overHATED? Part 2/3

Regex - underrated or overHATED? Part 2/3

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Let's stop using [a-zA-Z]+

Let's stop using [a-zA-Z]+

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Time to start learning how to regex

Time to start learning how to regex

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Regex - underrated or overHATED? Part 1/ 3

Regex - underrated or overHATED? Part 1/ 3

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Regex for Date, Time and Currency, with Code Examples

Regex for Date, Time and Currency, with Code Examples

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3 min read
Thoughts, quotes and thoughts about regex

Thoughts, quotes and thoughts about regex

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World-first Static time RegEx engine with O(0) time complexity

World-first Static time RegEx engine with O(0) time complexity

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Introduction to Regular Expressions

Introduction to Regular Expressions

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Natural Language v. Regex: The Context Wars

Natural Language v. Regex: The Context Wars

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Use RegEx to split a string in Javascript (preserving separators) | Notes

Use RegEx to split a string in Javascript (preserving separators) | Notes

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A Regular Expression to filter invalid names | Notes

A Regular Expression to filter invalid names | Notes

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2 min read
Regex basics with explanations and examples

Regex basics with explanations and examples

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Regular Expressions (Regex) Tutorial

Regular Expressions (Regex) Tutorial

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1 min read
Using matches & regex in Twig!

Using matches & regex in Twig!

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Regex..why can’t you just be normal? 🤯

Regex..why can’t you just be normal? 🤯

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Working with double-byte regex expressions and Python3

Working with double-byte regex expressions and Python3

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Step up your Regex game

Step up your Regex game

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How to use Regular Expressions in JavaScript

How to use Regular Expressions in JavaScript

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Making Regular Expressions Readable in JavaScript

Making Regular Expressions Readable in JavaScript

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2 min read
Regular Expressions cheat sheet

Regular Expressions cheat sheet

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