Regular Expressions

regular-expression

Great Reads

Ultra-Rapid PHP Application Development

by Christoph Buenger

Describes PHP application development with the free Scavix Web Development Framework (Scavix-WDF).

How to Build a Regex Engine in C#

by honey the codewitch

Build a feature rich, non-backtracking regular expression engine and code generator in C#

Reggie: A Non-Backtracking Streaming Regular Expression Code Generator

by honey the codewitch

Embed fast streaming C# code to match text based on inputted regular expressions

Regex to remove someone's overzealous use of regions.

by Daniel Vaughan

A Visual Studio regex to remove someone's overzealous use of regions in VS. Find and replace: (^.*\#region.*$)|(^.*\#endregion.*$) Remember to enable regular expressions in the Visual Studio find and replace dialog.

Latest Articles

Data Validation with Visual FA

by honey the codewitch

How to validate fields for things like data entry applications.

Visual FA Part 4: Generating Matchers and Lexers with the Visual FA C# Source Generator

by honey the codewitch

Easily add lexers to your project with this simple drop in NuGet package and a few annotations

Visual FA Part 3: The Code Behind It All

by honey the codewitch

In this article, we explore the inner workings of Visual FA

Visual FA Part 2: Using Visual FA to Analyze Automata and to Process Text

by honey the codewitch

Continuing in the Visual FA series, now we explore API fundamentals

All Articles

top

Regular Expressions

Data Validation with Visual FA

N 24 Apr 2024 by honey the codewitch

How to validate fields for things like data entry applications.

regular-expression

Visual FA Part 4: Generating Matchers and Lexers with the Visual FA C# Source Generator

4 Feb 2024 by honey the codewitch

Easily add lexers to your project with this simple drop in NuGet package and a few annotations

code-generation

regular-expression

Visual FA Part 3: The Code Behind It All

20 Jan 2024 by honey the codewitch

In this article, we explore the inner workings of Visual FA

regular-expression

Visual FA Part 2: Using Visual FA to Analyze Automata and to Process Text

18 Jan 2024 by honey the codewitch

Continuing in the Visual FA series, now we explore API fundamentals

regular-expression

Visual FA Part 1: Understanding Finite Automata

15 Jan 2024 by honey the codewitch

In this article, we will use my Visual FA solution to explore finite automata concepts used for finding patterns in text.

regular-expression

Compiling DFA Regular Expressions into .NET Assemblies

6 Jan 2024 by honey the codewitch

Adventures in Reflection.Emit! Here I present a regular expression engine with a Compile() feature.

compilation

regular-expression

FSM Explorer: Learn Regex Engines and Finite Automata

2 Jan 2024 by honey the codewitch

This article presents a program to help visualize regular expression mechanics.

regular-expression

Rolex: Unicode Enabled Lexer Generator in C#

20 Nov 2023 by honey the codewitch

Generate fast, easy to use lexers/scanners in major .NET languages

rxcg: A Simple Text Matcher C Code Generator for IoT

15 Nov 2023 by honey the codewitch

Generate tight C code to match text based on regular expressions

IoT

regular-expression

Extract a string between two strings

27 Jul 2023 by Maciej Los

Try this pattern: 245\-\d{2}\/\$\d{1}(.*?)\d{3}\-\d{2}\/\$\d{1} Example: regex101: build, test, and debug regex[^]

Oracle

regular-expression

Extract a string between two strings

27 Jul 2023 by Member 16059392

Sorry, I know this has likely been asked before but I just can't get it to work in my use case. Need: In the below I need to extract the information between 245 and 250-03 (in bold). Quote: 100-01/$1 郑择魁; 245-02/$1 《阿Q正传》的思想和艺术 / 郑择魁;...

Oracle

regular-expression

Regular expression question

14 Jun 2023 by loyal ginger

I was trying to manipulate a string and needed to find various parts of a string. As an example, the following is the original string: C:\temp\tempa\target\Batch003\Images\20230127.120027\ROW\000014185386.jpg I wanted to find the part...

regular-expression

Regular expression question

14 Jun 2023 by loyal ginger

I modified the regular expression in my question. The new one is (?(?:[a-zA-Z]:|\\)\\.+?)(?\\2023[0-1][0-9][0-3][0-9]\.[0-2][0-9][0-5][0-9][0-5][0-9]\\)(?[a-zA-Z]+)\\(?.+) It does...

regular-expression

Regular expression question

13 Jun 2023 by OriginalGriff

If the Part to the right of the string you want is always ROW/filename.ext then I'd use that and Regex.Replace: (\\\d*\.\d*)(?=\\.+?\\..*\..{3}) Should do it.

regular-expression

I need a Regular expression for alphabet and space

9 May 2023 by Member 15849100

^ : start of string [A-Za-z\s]+ : match one or more occurrences of alphabets (both upper and lower case) and spaces $ : end of string This regular expression will only match strings that consist of alphabets and spaces, with no other characters...

regular-expression

C# regex handle newline in headers

24 Apr 2023 by Evilfish2000

I am reading the headers of an email message where the headers look like this: Date: 24 Apr 2023 09:43:44 +0200 Subject: HELP! Location 'Name249fc8e9-068b-47c3-a39c-a3e4cdfe2c16' is not responding! Content-Type: text/plain; charset=us-ascii...

regular-expression

C# regex handle newline in headers

24 Apr 2023 by Richard Deeming

As discussed in the comments, Microsoft officially recommend using MimeKit[^] for all email-related code. It's free and open-source, and it's actively maintained: GitHub - jstedfast/MimeKit: A .NET MIME creation and parser library with support...

regular-expression

Regex multiple include/exclude string from single regex

24 Mar 2023 by jerome sergan

Hi all, i need help , I would like to know if what I am trying to do is possible, I am using php to run an API to retrieve company data for a CRM, this API accept regular expressions to do the search, for exemple if i'm literally using “CEO”, i...

PHP

regular-expression

Regex multiple include/exclude string from single regex

24 Mar 2023 by GKP1992

That depends on what the API allows you to do. Whether it exposes a method that can accept a list of regexes or strings to include or exclude. Assuming the API to be a black-box. The only way you can know what it does is through the...

PHP

regular-expression

Regex multiple include/exclude string from single regex

24 Mar 2023 by Chris Copeland

You can use regular expression negative look-aheads to ensure that certain patterns don't match within the string, while still having a matcher to find terms you are looking for. Here's an example regular expression[^] I can't guarantee that...

PHP

regular-expression

Regex multiple include/exclude string from single regex

23 Mar 2023 by OriginalGriff

I'd use two regexes to make it more obvious and easier to maintain: the first to retrieve all matching strings, and then a second applied to the results which eliminates the "ignore list". While you could do it in a single regex - I think, I've...

PHP

regular-expression

Is it possible to know what's the position inside a regular expression of the matched substring?

11 Mar 2023 by LB2371

Javascript

regular-expression

Is it possible to know what's the position inside a regular expression of the matched substring?

11 Mar 2023 by PIEBALDconsult

This is C#, .net, and Linq, so I doubt you can use it, but maybe someone else can and maybe it will give you an idea. The groups will be named "1" through "12" (group "0" is the overall match) so we can test which group had a successful match...

Javascript

regular-expression

How do I reformat raw output ?

5 Mar 2023 by Maciej Los

You mean, you want to achieve something like that: [ ]{2,} and replacement with \n? Result: Waiting to connect to bluetoothd... Agent registered [CHG] Controller 00:50:B6:80:4D:5D Pairable: yes [CHG] Controller 00:15:83:15:A2:CB Pairable: yes ...

regular-expression

Regex to match below pattern

22 Feb 2023 by ShifaMM

Need to match regex for below patterns I/p: 101-123 O/p: 101-123 What I have tried: private Regex Example = new Regex(@"^\d{3}-\d{3}(-[A-Z0-9]+)?($[A-Z0-9]+$)?(\s[a-zA-Z0-9]+)*$");

regular-expression

Is it possible to know what's the position inside a regular expression of the matched substring?

21 Feb 2023 by CPallini

As a workaround you may search the result inside the regular expression pattern.

Javascript

regular-expression

Is it possible to know what's the position inside a regular expression of the matched substring?

21 Feb 2023 by OriginalGriff

RegExp.prototype.exec() - JavaScript | MDN[^] returns an object with an index property.

Javascript

regular-expression

Regex to match below pattern

21 Feb 2023 by OriginalGriff

Try:\d+-.+?[\s$] If you are going to use regular expressions, you need a helper tool. Get a copy of Expresso[^] - it's free, and it examines and generates Regular expressions.

regular-expression

Regex to match below pattern

21 Feb 2023 by Mike Hankey

A good site for experimenting with/Learning RegEx is regex101: build, test, and debug regex[^]

regular-expression

Usage of regular expressions for search and replacs

17 Feb 2023 by Versy Stems

I don't know how to perform a certain type of search and replace. What I have tried: To adapt an old source code within eclipse it will be very convenient to do a search and replace keeping one character of the original text and replacing it...

regular-expression

Usage of regular expressions for search and replacs

17 Feb 2023 by OriginalGriff

Try:([a-zA-Z]+)(?\d+)(...

regular-expression

How can I replace "span" in a string, but only if it's the HTML tag?

14 Feb 2023 by Andre Oosthuizen

Assuming that your text of - Lorem ipsum span sit amet, consectetur adipiscing elit. Sed span velit, vestibulum vel pellentesque sed, mattis et span. Morbi justo est, pharetra vitae nisl at,

Javascript

regular-expression

How can I replace "span" in a string, but only if it's the HTML tag?

13 Feb 2023 by LB2371

I have the following HTML text: Lorem ipsum span sit amet, consectetur adipiscing elit. Sed span velit, vestibulum vel pellentesque sed, mattis et span. Morbi justo est, pharetra vitae...

Javascript

regular-expression

How can I replace "span" in a string, but only if it's the HTML tag?

13 Feb 2023 by LB2371

This is the solution I've found (but maybe there's a better one...): text.innerHTML = text.innerHTML.replace(/]+>/g, m => m.replace("span", "a"));

Javascript

regular-expression

How can I replace "span" in a string, but only if it's the HTML tag?

13 Feb 2023 by Chris Copeland

You could try: content.replaceAll(/]*)>/g, ''); This should cover most bases, though it's worth noting that dealing with HTML elements can be quite tricky. If somebody forgets to close an element then the matching might not...

Javascript

regular-expression

How Can I Validate An Entered Formula Is Valid Or Not?

1 Feb 2023 by Bikram Chhetri

I have a requirement like this:User can add the formula (suppose A + B) from the text box and it is saved as a formula in the database table and later he can calculate the other values as per this formula and get back the calculated value as a result with proper currency convert.If user...

Javascript

jQuery

regular-expression

Regexp - how to match specific words, but not if they're inside parentheses (with or without other words within)?

31 Jan 2023 by LB2371

I need to match specific words in a text, but not if they're inside parentheses (with or without other words within). For example, in the text La première édition du code civil français est l'aboutissement d'une double réflexion menée afin...

Javascript

regular-expression

Regexp - how to match specific words, but not if they're inside parentheses (with or without other words within)?

31 Jan 2023 by OriginalGriff

The problem is that [^(] Means literally "Match anything that isn't an open perenthesis" - so it's not just spaces that are a problem - any character before "code" other than "(" will be matched. Personally, I wouldn't use a single Regex to do...

Javascript

regular-expression

Regexp - how to match specific words, but not if they're inside parentheses (with or without other words within)?

31 Jan 2023 by Chris Copeland

I was able to get a match using: (?![^(]*\))\s*(code (?:civil|pénal|de procédure civile|de procédure pénale))\s* To break this down: (?![^(]*\)) This is a negative lookahead, it stipulates that we shouldn't capture matches where the text...

Javascript

regular-expression

How to extract numbers from a string

11 Jan 2023 by Member 15881193

I want to extract only a number from the following: RTGS-VEERPAL/KARBH13267941306 TO STAMP PAPER CHARGES 2013 1348 By Clg/33790/ICICI/DELCTS1/166 RTGS-KUSUM TOMAR/CNRBH13271696922 RTGS-SHRI BALAJI BUILDHOME PVT /KARBH13294076078 By...

Python

regular-expression

How to extract numbers from a string

11 Jan 2023 by giocip

#STRING DATA MINING BY REGEX import re def main(): s = '''RTGS-VEERPAL/KARBH13267941306 TO STAMP PAPER CHARGES 2013 1348 By Clg/33790/ICICI/DELCTS1/166 RTGS-KUSUM TOMAR/CNRBH13271696922 RTGS-SHRI BALAJI BUILDHOME PVT /KARBH13294076078 By...

Python

regular-expression

How to extract numbers from a string

11 Jan 2023 by Zak River

Try running this example import re data = """ RTGS-VEERPAL/KARBH13267941306 TO STAMP PAPER CHARGES 2013 1348 By Clg/33790/ICICI/DELCTS1/166 RTGS-KUSUM TOMAR/CNRBH13271696922 RTGS-SHRI BALAJI BUILDHOME PVT /KARBH13294076078 By...

Python

regular-expression

How to extract numbers from a string

1 Jan 2023 by giocip

#STRING DATA MINING def main(): s = '''RTGS-VEERPAL/KARBH13267941306 TO STAMP PAPER CHARGES 2013 1348 By Clg/33790/ICICI/DELCTS1/166 RTGS-KUSUM TOMAR/CNRBH13271696922 RTGS-SHRI BALAJI BUILDHOME PVT /KARBH13294076078 By...

Python

regular-expression

How to send special characters by sendkeys.sendwait() method ?

17 Dec 2022 by DoingWork

How to send special characters by SendKeys.SendWait() method ? I am sending this url "https://www.google.com/search?client=firefox-b-d&q=%3A}O" by SendKeys.SendWait(txt) method but error displays System.ArgumentException: 'SendKeys string...

C#7.1

Visual-Studio

regular-expression

How to send special characters by sendkeys.sendwait() method ?

17 Dec 2022 by Richard MacCutchan

You have a number of normal characters in your string surrounded by braces ({ and }). These are not valid special types. See SendKeys.Send(String) Method (System.Windows.Forms) | Microsoft Learn[^] for the full list.

C#7.1

Visual-Studio

regular-expression

Backreference is not working

16 Dec 2022 by Arifin Mustafa

>"123-456-7890".match(/(\d{3})...

Javascript

regular-expression

Backreference is not working

16 Dec 2022 by Richard Deeming

It's not at all clear what you're trying to do, but your input clearly doesn't match the second pattern. Your first pattern matches any three digits, followed by a "-", followed by any other three digits. Your second patter matches any three...

Javascript

regular-expression

How do I adjust the regular expression to ignore beginning substring?

14 Dec 2022 by Member 15864925

What I am trying to do is modify the regular expression of: [0-9]{3}( |-|)[0-9]{2}( |-|)[0-9]{4}(?![0-9]) to ignore strings that start with HSF. What I have tried: The best I can come up with is: ( |-|^|[^HSF])[0-9]{3}( |-|)[0-9]{2}(...

Javascript

regular-expression

How do I adjust the regular expression to ignore beginning substring?

14 Dec 2022 by OriginalGriff

To add to what Richard has said, if you are going to use Regular Expressions, then get a copy of Expresso[^] - it's free, and it examines and generates Regular expressions.

Javascript

regular-expression

How do I adjust the regular expression to ignore beginning substring?

14 Dec 2022 by Richard Deeming

Depending on the browsers you need to support, a negative lookbehind seems to work: (?

Javascript

regular-expression

Remove leading & ending some chars & whitespaces

29 Oct 2022 by montaigne gremo

Hi, I want to delete all and ending +- symbols and whitespaces, how to do this? +Daviddance -disco +Alfredo Paixao +++++ -Serge Gamesbourg - The Cool, The Hip & The Square Dennis Taylor to Daviddance -disco ...

regular-expression

Remove leading & ending some chars & whitespaces

28 Oct 2022 by Richard MacCutchan

See the answer(s) to your previous question on this subject. And as suggested by OriginalGriff, you should get a copy of Expresso Regular Expression Tool[^] which will allow you to create REs quickly and easily.

regular-expression

Cleanup the lines which consist of only symbols + - spaces

27 Oct 2022 by montaigne gremo

Hi, I want to cleanup the lines which consist of only symbols + - spaces. How can I do this? FAUSTINE -fr +Reg Parham Armando Baez +Zimmer90 ++- +Deems -lofi + - Vittoria Siggillino Kyd Kango Nils Jitner - Nils -sjazz to FAUSTINE -fr...

regular-expression

How do I use regex to remove brackets and spaces

27 Oct 2022 by Grant Mc

I have created a barcode validator, and some of the barcodes we get may be in a format such as (03) 15645 132156464 I would like to remove only spaces and brackets. I do not want to remove anything else, such as Barcode pending Although I can...

C#7.0

regular-expression

How do I use regex to remove brackets and spaces

27 Oct 2022 by OriginalGriff

Your example as shown doesn;t work: it leaves ")" characters. And a simpler version would be: [\s()] which does it on a character-by-character basis. If you are going to use Regexes, then get a copy of Expresso[^] - it's free, and it examines,...

C#7.0

regular-expression

How do I use regex to remove brackets and spaces

27 Oct 2022 by Grant Mc

Figured it out. sampleBarcode = Regex.Replace(sampleBarcode, @"\s+|$+|$+", "");

C#7.0

regular-expression

Cleanup the lines which consist of only symbols + - spaces

27 Oct 2022 by RickZeeland

You can practice with an online tool like RegExr[^] To match all spaces, + and - symbols try: ([ +-])+ To negate the result, try: ([^ +-])+ [Edit] To match lines, try: ([ +-]*\n)+

regular-expression

How to put a variable in pattern string when using regex?

11 Oct 2022 by Maciej Los

Sorry, but your question is not clear... Seems you want to find a substring within a title... Regex is not for such of requirements. If you want to get a text within a "group-title=", try this: .group-title=\"(.*?)\" Example: regex101: build,...

string

patterns

regular-expression

How to put a variable in pattern string when using regex?

10 Oct 2022 by Jake-J

Hi there, I'm new to regular expression and I'm trying to learn it. I have a string like this: #EXTINF:-1, tvg-name="THE NAME" tvg-logo="THE LOGO" group-title="THE TITLE",THE ITEM https://www.SampleSite.com I'm going to check if THE TITLE part...

string

patterns

regular-expression

How to use string.split properly and ignore empty lines?

9 Oct 2022 by Jake-J

Hi there, I have an M3U file and it's usually formatted likes this: #EXTM3U #EXTINF:-1, tvg-name="NAME 1" tvg-logo="LOGO" group-title="TITLE 1",ITEM 1 https://www.SampleSite1.com #EXTINF:-1, tvg-name="NAME 2" tvg-logo="LOGO"...

splitter

string

regular-expression

How to use string.split properly and ignore empty lines?

9 Oct 2022 by Dario Picca

I prefer use LINQ for this var objects = myString.Split(',') .Where(x => !string.IsNullOrEmpty(x)) .ToList();

splitter

string

regular-expression

How to use string.split properly and ignore empty lines?

9 Oct 2022 by OriginalGriff

A newline isn't an empty entry because any empty entry is an empty string: one which contains no characters at all. Newline is a character (or two characters on some systems) so it doesn't get removed. Try adding a newline to your separating...

splitter

string

regular-expression

How to parse an M3U list using regex in C#

5 Oct 2022 by Jake-J

Hi there, I want to use regex to parse a m3u list. Let's suppose we have this m3u item: #EXTINF:-1, tvg-name="THE NAME" tvg-logo="THE LOGO" group-title="THE TITLE",THE ITEM https://www.SampleSite.com I want to extract THE NAME,THE LOGO, THE...

text

parsing

regular-expression

How to parse an M3U list using regex in C#

5 Oct 2022 by Patrice T

Just a few interesting links to help building and debugging RegEx. Here is a link to RegEx documentation: perlre - perldoc.perl.org[^] Here is links to tools to help build RegEx and debug them: .NET Regex Tester - Regex Storm[^] Expresso Regular...

text

parsing

regular-expression

How to parse an M3U list using regex in C#

5 Oct 2022 by OriginalGriff

Try this: \btvg-name="([^"]+)".tvg-logo="([^"]+)".group-title="([^"]+)",(.*?)\n*(https?\S+) If you are going to work with regexes, get a copy of Expresso[^] - it's free, and it examines and generates Regular expressions.

text

parsing

regular-expression

REGEX for single character and any non blank number

23 Sep 2022 by theskiguy

I have been pounding my head trying to figure out a regex for the following scenario. I need the following to be matched: X11 X.25 X12. X-21.25 I don't want this matched: X I have come close with 2 options but both have issues. The 1st...

regular-expression

REGEX for single character and any non blank number

23 Sep 2022 by Patrice T

Quote: ([X]-?[0-9]*\.)[0-9]* As many parts are optionnal, you need a RegEx a little more complicated. [X]-?(\d+\.*[0-9]*|.[0-9]*) Just a few interesting links to help building and debugging RegEx. Here is a link to RegEx documentation: perlre...

regular-expression

REGEX for single character and any non blank number

23 Sep 2022 by OriginalGriff

Try this: ^X-?((\d+)|(\d+\.\d*)|(\.\d+))$ ^X-? Beginning of line or string X-, zero or one repetitions [1]: A numbered capture group. [(\d+)|(\d+\.\d*)|(\.\d+)] Select from 3 alternatives [2]: A numbered capture...

regular-expression

Printing a number before a word in regex

18 Sep 2022 by Apoorva 2022

From resume text, I want to extract the number of years of experience of a candidate. How I intended on obtaining this--> Years of experience is usually mentioned as '4 Years' or '6+ years' or '4.8 year'. What I have tried: ...

Python

regular-expression

Printing a number before a word in regex

18 Sep 2022 by Patrice T

Python

regular-expression

Regex - printing the digit right before '+' symbol

15 Sep 2022 by Apoorva 2022

From resume text, I want to extract the number of years of experience of a candidate. How I intended on obtaining this--> Years of experience is usually mentioned as '4 years' or '6+ years'. How do I include '+' in the code while ensuring that...

Python

regular-expression

Regex - printing the digit right before '+' symbol

15 Sep 2022 by OriginalGriff

Try: [^\d]*(\d*\+?) years|Years|year|Year

Python

regular-expression

Regular expression query

14 Sep 2022 by jsc42

1. VUGS is not getting printed correctly because you have assumed that the name of a company starts with a capital letter followed by zero or more lower case letters. However, VUGS starts with multiple capital letters. 2. You are assuming that...

Python

regular-expression

Regular expression query

14 Sep 2022 by Apoorva 2022

I'm writing a list of regular expressions to identify company names from text. This is what the text is like--> Summer Intern Genisup India Pvt. Ltd., Hosur, Tamil Nadu June 2021 – Aug 2021 1⁄2 Remote • Internship on the topic NLP: Topic...

Python

regular-expression

Creating a regex expression for target URL

12 Sep 2022 by Socks92

Hello, I'm trying to create a regex expression which creates validation for a target Url. Below are the rules I would like to include: - must begin with http:// or https:// - path name must be between 1-63 characters - no upper case characters...

regular-expression

Creating a regex expression for target URL

12 Sep 2022 by OriginalGriff

That isn't even close. To select "http: or https:" you would need teh Regex "OR" operator '|' ^((http:)|(https:)).*$ Matches any string that starts with "http:" or "https:" But even with that, your rules are somewhat arbitrary: a valid URL can...

regular-expression

How do I extract an email id from a file using 'regular expressions'?

10 Sep 2022 by Apoorva 2022

I found the solution through the 'tika' library. Here's the code --> Extracting text from '.docx' file (Works for pdf as well) from tika import parser file = r'../content/drive/My Drive/foldy folder/resume.docx' file_data =...

Python

NLP

regular-expression

How do I extract an email id from a file using 'regular expressions'?

8 Sep 2022 by Apoorva 2022

I want to extract an email id from a text 'file' using 'Regular Expressions'. Is there a way to feed a file as input, use the relevant regular expression, & get an email id from it? What I have tried: #Extracting email Ids...

Python

NLP

regular-expression

How do I extract an email id from a file using 'regular expressions'?

8 Sep 2022 by OriginalGriff

To add to what Richard has said ... Email validation is pretty complicated, and your regex is far too simplistic - it allows illegal addresses such as "@." and doesn't find legal addresses such as "a.b@x.com", "a@x.co.uk", "a@x-y.com", and so...

Python

NLP

regular-expression

How do I extract an email id from a file using 'regular expressions'?

8 Sep 2022 by Richard MacCutchan

You cannot use a filename for the scond parameter to the re — Regular expression operations — Python 3.10.7 documentation[^] findall function. You need to read the contents of the file and use the resulting text. See 7. Input and Output — Python...

Python

NLP

regular-expression

Regular expression (\\w+)\\s "space problem "

21 Aug 2022 by Patrice T

Quote: I changed the regular expression to "(\\w+)\\s+" - no change. Then I tried "(\\w+)\\W" and it made things worse - now extracting ALL words. To extract all words, no matter the spaces, commas or points, I use this RegEx (\w+) Just a few...

C++

regular-expression

Regex - need to create like an if statement in regex

20 Aug 2022 by Patrice T

Try this RegEx with groups 1, 2 and 4 ([0-9.]{10}).+- ([a-zA-Z]+( [a-zA-Z]+)*).+\d ([a-zA-Z]+( [a-zA-Z]+)*) Just a few interesting links to help building and debugging RegEx. Here is a link to RegEx documentation: perlre - perldoc.perl.org[^]...

regular-expression

Regex - need to create like an if statement in regex

20 Aug 2022 by Joe Doe234

Hi I have the following 2 type of string which I need to use the same regex for. string 1 : 2022.08.14 (19h45) - Salernitana 0-1 AS Roma (suppercoppa) string 2 : 2022.08.14 (19h45) - Salernitana 0-1 AS Roma I need to use one regex so I...

regular-expression

Regex to Match Version Number Beginning with a Specific Digit

20 Aug 2022 by Brian C Hart

Example of how to use the caret (^) in Regexes that have specific matching requirements

Regex - need to create like an if statement in regex

20 Aug 2022 by OriginalGriff

When I run your regex (in Expresso) against either string I get similar results: String 1: 1: 2022.08.14 2: Salernitana 3: AS Roma (suppercoppa) String 2: 2022.08.14 2: Salernitana 3: AS Roma So ... what am I doing that you aren't? How did...

regular-expression

What would be the regular expression for {alphabets} in C#?

7 Aug 2022 by Himansh jain

I want to create regular expression for {SID} , {MetD}, {car} which should include curly brackets as well. What I have tried: Regex r = new Regex(@"^{[A-Za-z]}$"); the above regular expression is not working.

C#2.0

regular-expression

What would be the regular expression for {alphabets} in C#?

7 Aug 2022 by Patrice T

Quote: the above regular expression is not working. Try something like Regex r = new Regex(@"^{[A-Za-z]+}$"); Just a few interesting links to help building and debugging RegEx. Here is a link to RegEx documentation: perlre -...

C#2.0

regular-expression

What would be the regular expression for {alphabets} in C#?

7 Aug 2022 by OriginalGriff

Your regex specifies: ^ Start of line { A literal '{' [A-Za-z] Any single upper or lower case letter. } A literal '}' $ End of line You need to add a "multiple times" indicator to that:...

C#2.0

regular-expression

Pcre dosn't match regexp I insert the whole string

21 Jul 2022 by armanvaneld

hi i try to match id in this string in PCRE {"id":"zoo-coin","symbol":"zdcv2","name":"ZodiacsV2"} '"id":"(.*?)","symbol":"zdcv2"' What I have tried: i know the symbol,in this case ZodiacsV2,build a regexp for match id i use this code but not...

regular-expression

Pcre dosn't match regexp I insert the whole string

21 Jul 2022 by OriginalGriff

It works for me in Expresso: I get the whole string matched correctly, together with an anonymous group containing "zoo-coin" only. The way I'd do it is to switch to a non-capturing prefix and suffix: (?

regular-expression

Need to validate the values and return 'true' or 'false' boolean value using regex

18 Jul 2022 by SherinFemina

New to Selenium and working on few hands on activity. Below is my query: An application has been developed which enrolls the user details to the shipment company. Using the application user can track their shipment status and details. URL:...

Need to validate the values and return 'true' or 'false' boolean value using regex

18 Jul 2022 by Maciej Los

Not sure i understand you well, but... If you want to return boolean value, use find() method. See: java - regex isMatch returns false - Stack Overflow[^] Difference between matches() and find() in Java Regex - Stack Overflow[^] public static...

Matching list of words but not when found inside longer words

12 Jul 2022 by Soskipic

Select-String -Pattern "\b($($keywords -join '|'))\b"-AllMatches

PowerShell

regular-expression

Matching list of words but not when found inside longer words

12 Jul 2022 by Soskipic

I have a list of keywords (sometimes with non-alphanumeric characters) that I’d like to find in a list of files. I can do that with the code below, but I want to avoid matching keywords if they are found inside another word, e.g.: Keywords.csv:...

PowerShell

regular-expression

How do I NOT remove "new line" \n from string using regular expression?

6 Jul 2022 by Dave Kreskowiak

\000 in a RegEx are ASCII values for characters in Octal (digits are 0 through 7) \x00 are ASCII values in hexadecimal For Unicode values, it's \u0000 Since you defined a range of values, you also included the values for Carriage Return and Line...

C++

regular-expression

Regex expression for password complexity

30 Jun 2022 by Member 11134333

I want the Regular Expression for Password Complexity The password must then contain characters of the following rules: 1- At least one Upper case letter 2- At least Lower case 3- At least one Numbers 4- Disallow the consecutive digits like...

ASP.NET5

regular-expression

Regex expression for password complexity

30 Jun 2022 by OriginalGriff

Don't. It's a mess at best, and when the rules change - as they always do - the changes are a total PITA as the Regex is massively complex already - if you could implement each of your rules, which I don't think you can - "consecutive numbers"...

ASP.NET5

regular-expression

regular expression for indian vehicle number

31 May 2022 by Member 15657898

Validators.pattern('[A-Z]{2}[ -][0-9]{1,2}(?: [A-Z])?(?: [A-Z]*)? [0-9]{4}')

expression

regular-expression

I don't have regex.h in my C library(I dont sure what's it called), how I can insllate or add regex.h in my C

24 May 2022 by CHOTIWAT CHOKDEEWATANA

i can't #include (regular Regular expressions)in my c program. I very new about programming, therefore i don,t know how to add file(or module i don't sure what's it called) in my c in my library. What I have tried: I try to download so...

regular-expression