Regular Expressions 101

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Community Patterns

1

Parse powers of string

ECMAScript (JavaScript)
When you want to parse a litteral math expression with power in and you want e^x to be e**x Use this regex!
Submitted by anonymous - 4 years ago
1

Regex Replace params by space when value is null

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 4 years ago
1

nb - legacy section with marginal note finder

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 4 years ago
1

nb - legacy section/subsection with marginal note finder

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 4 years ago
1

nb - legacy section/subsection finder

PCRE (PHP <7.3)
no headings
Submitted by anonymous - 4 years ago
1

create or change one optional part to another

PCRE (PHP <7.3)
Skip match process when S exist, or remove optional left most target T, capture left and right part of T. Use case: if N is not exist, modify/change T to N, or create N. If any create or modify write operated, appending output N to right using subsitution "$1$2N".
Submitted by anonymous - 4 years ago
1

Browser Console - Format Specifier

ECMAScript (JavaScript)
Captures format specifiers commonly used in logging and console messages, as defined in the current whatwg/console spec: %s: Formats the value as a string %i: Formats the value as an integer %d: Formats the value as an integer %f: Formats the value as a floating point value...
Submitted by anonymous - 4 years ago
1

Browser Console - Format Specifier

ECMAScript (JavaScript)
Captures format specifiers commonly used in logging and console messages, as defined in the current whatwg/console spec: %s: Formats the value as a string %i: Formats the value as an integer %d: Formats the value as an integer %f: Formats the value as a floating point value...
Submitted by anonymous - 4 years ago
1

VS Code - Stylus Problem Matcher

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 4 years ago
1

1G

Python
no description available
Submitted by anonymous - 4 years ago
1

Ad Astra

ECMAScript (JavaScript)
no description available
Submitted by anonymous - 4 years ago
1

Regular Expression to Validate File Path and Extension

ECMAScript (JavaScript)
Recently, I was looking for a regular expression to validate a file path and extension. I found several of them on Google, but none of them fit my requirement. So I decided to put together a version that suits my need. Here is the Regular Expression to validate the file path and extension and it is ...
Submitted by anonymous - 4 years ago
1

Star-Quantifier

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 4 years ago
1

user-agent

ECMAScript (JavaScript)
Http response header User-Agent
Submitted by anonymous - 4 years ago
1

user-agent

ECMAScript (JavaScript)
Http response header User-Agent
Submitted by anonymous - 4 years ago
1

Between Brackets

Python
no description available
Submitted by anonymous - 4 years ago
1

Molecules to atoms p1

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 4 years ago
1

access-group test

Python
no description available
Submitted by anonymous - 4 years ago
1

Guid Query in Tc Files

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 4 years ago
1

iso_names

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 4 years ago
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Community Library Entry

0

Regular Expression
Java 8

"
\b((0?[1-9]|[12][0-9]|3[01])[-/.\s](0?[1-9]|1[0-2])[-/.\s](19[0-9]{2}|200[0-9]))|((0?[1-9]|1[0-2])[-/.\s](0?[1-9]|[12][0-9]|3[01])[-/.\s](19[0-9]{2}|200[0-9]))|(([012][1-9]|3[01])(st|nd|rd|th)?\s(?i:Jan|Feb|Fév|Mar|Apr|Avr|May|Mai|Jun|Juin|Jul|Juil|Aug|Sep|Sept|Oct|Nov|Dec|Déc)\s(?:19[0-9]{2}|200[0-9]))|((?i:Jan|Feb|Fév|Mar|Apr|Avr|May|Mai|Jun|Juin|Jul|Juil|Aug|Sep|Sept|Oct|Nov|Dec|Déc)\s(?:0?[1-9]|[12][0-9]|3[01])(st|nd|rd|th)?\s(?:19[0-9]{2}|200[0-9]))|((0?[1-9]|[12][0-9]|3[01])(st|nd|rd|th)?\s(?i:January|janvier|February|fevrier|février|March|mars|April|avril|May|mai|June|juin|July|juillet|August|aout|août|September|septembre|October|octobre|November|novembre|December|décembre|decembre)\s(?:19[0-9]{2}|200[0-9]))|((?iu:January|janvier|February|fevrier|février|March|mars|April|avril|May|mai|June|juin|July|juillet|August|aout|août|September|septembre|October|octobre|November|novembre|December|décembre|decembre)\s(?:0?[1-9]|[12][0-9]|3[01])(st|nd|rd|th)?\s(?:19[0-9]{2}|200[0-9]))|(0?[1-9]|1[0-2])[-\/.\s](0?[1-9]|[12][0-9]|3[01])[-\/.\s](19|20)0[0-9]|(19|20)0[0-9][-\/.\s](0?[1-9]|1[0-2])[-\/.\s](0?[1-9]|[12][0-9]|3[01])\b
"
gm
Open regex in editor

Description

Covering Dates starting from year 2009 and older in French and English

Some of the valid Dates format April 2nd 2008 April 2 2008 April 02 2008 2009-01-01 31-03-2009 03-31-2009 31 March 2009 March 31 2009 31 mars 2009 May 10th 1989 April 2nd 2008 2009.01.01 2009 1 31 31st december 2009 31 décembre 2009 31 Decembre 2009 2009/02/01 2009.01.01 2009 01 01 31 03 2009 12 31 2009

Submitted by Francois-Alexandre Valade-Casaubon - a year ago