- regex101: build, test, and debug regex
Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP PCRE, Python, GO, JavaScript, Java, C# NET, Rust
- RegExr: Learn, Build, Test RegEx
Menu RegExr is an online tool to learn, build, test Regular Expressions (RegEx RegExp) Supports JavaScript PHP PCRE RegEx Results update in real-time as you type Roll over a match or expression for details
- Regular expression - Wikipedia
The phrase regular expressions, or regexes, is often used to mean the specific, standard textual syntax for representing patterns for matching text, as distinct from the mathematical notation described below
- Regex Tutorial - How to write Regular Expressions?
A regular expression (regex) is a sequence of characters that define a search pattern Here's how to write regular expressions: Start by understanding the special characters used in regex, such as " ", "*", "+", "?", and more Choose a programming language or tool that supports regex, such as Python, Perl, or grep
- Regular expression syntax cheat sheet - JavaScript | MDN
This page provides an overall cheat sheet of all the capabilities of RegExp syntax by aggregating the content of the articles in the RegExp guide If you need more information on a specific topic, please follow the link on the corresponding heading to access the full article or head to the guide
- Regex Cheat Sheet - rexegg. com
If you are a complete beginner, you should get a firm grasp of basic regex syntax just by reading the examples in the tables I tried to introduce features in a logical order and to keep out oddities that I've never seen in actual use, such as the "bell character"
- regex - What does ?= mean in a regular expression? - Stack Overflow
May I know what ?= means in a regular expression? For example, what is its significance in this expression: (?= *\d) ?= is a positive lookahead, a type of zero-width assertion What it's saying is that the captured match must be followed by whatever is within the parentheses but that part isn't captured
- Regex Vis
Regex visualizer editor, make the regular expression easier
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