Recent questions tagged regex

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regex - How to write word boundary inside character class in python without losing its meaning? I wish to add underscore(_) in definition of word boundary()

I am aware that definition of word boundary is (?<!w)(?=w)|(?<=w)(?!w) and i wish to ... character class without losing its original meaning. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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727 views

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regex - Checking correctness of an email address with a regular expression in Bash

I'm trying to make a Bash script to check if an email address is correct. I have this regular ... in backquote substitution Any clue?? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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regex - Remove Dollar Sign from Entire Python Pandas Dataframe

I'm looking to remove dollar signs from an entire python pandas dataframe. It's similar to this post: Remove ... to replace the dollar signs. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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879 views

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regex - How to extract the strings between two special characters using Regular Expressions in C#

I am totally new to regular expressions. And what I need to achieve is, I have a string variable containing the ... logics than not having it. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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660 views

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regex - How to remove trailing comments via regexp?

For non-MATLAB-savvy readers: not sure what family they belong to, but the MATLAB regexes are described here in ... efficient way to do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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594 views

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regex - Phone Number Validation Javascript

I want users to allow only phone numbers in following format xxx-xxx-xxxx or xxxxxxxxxx all digits only . Can ... expression to do this ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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666 views

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regex - Capturing emoticons using regular expression in python

I would like to have a regex pattern to match smileys ":)" ,":(" .Also it should capture repeated ... help for this seemingly simple task. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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685 views

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regex - Stripping hex bytes with sed - no match

I have a text file with two non-ascii bytes (0xFF and 0xFE): ??58832520.3,ABC 348384,DEF The hex for ... explain what the problem was with sed. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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751 views

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regex - How can I implement Unix grep in Perl?

How can I implement grep of Unix in Perl? I tried to use Perl's built-in grep. Here is the code which is ... of Perl. Thanks in advance :) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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869 views

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regex - nginx subdomain rewrite

I need a nginx rewrite rule to rewrite from: http://some-keyword.example.com to www.example.com/keyword.php? ... how to write these two rules? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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885 views

1 answer

regex - R extract first number from string

I have a string in a variable which we call v1. This string states picture numbers and takes the form of ... Help would be appreciated greatly! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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863 views

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regex - How do you split a javascript string by spaces and punctuation?

I have some random string, for example: Hello, my name is john.. I want that string split into an array like ... not seem to work. Any ideas? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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647 views

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regex - why regexec() in posix c always return the first match,how can it return all match positions only run once?

Now when I want to return all match positions in str, such as: abcd123abcd123abcd Suppose I want to get all "abcd", ... 'hello' num 1: 'world' See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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507 views

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regex - Regular Expression to extract php code partially (( array definition ))

I have php code stored (( array definition )) in a string like this $code=' array( 0 => "a", "a ... i try explain with this codepad.org/td6LVVme See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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568 views

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regex - Python re.search

I have a string variable containing string = "123hello456world789" string contain no spacess. I want to write a regex ... this with re.search()? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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838 views

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regex - HTML5 input validate letters and numbers

I need a pattern for a HTML5 form. Lowercase letters accepted Uppercase letters accepted Numbers accepted Minus character ... guess I'm close? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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556 views

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regex - Matching (e.g.) a Unicode letter with Java regexps

There are many questions and answers here on StackOverflow that assume a "letter" can be matched in a regexp ... library that gets this right? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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627 views

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regex - Find base name in URL in Javascript

I want to extract the base name from a image URL in Javascript. Would somebody care to give me a a hand on the ... worked for me out of the box. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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538 views

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regex - Regular Expression "Matching" vs "Capturing"

I've been looking up regular expression tutorials trying to get the hang of them and was enjoying the tutorial ... I am not understanding? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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550 views

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regex - Passing variable to awk and using that in a regular expression

I'm learning awk and I have trouble passing a variable to the script AND using it as part of a regex search pattern. ... ;-) How do I do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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961 views

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regex - Java function to return if string contains illegal characters

I have the following characters that I would like to be considered "illegal": ~, #, @, *, +, % ... elegant/efficient way of accomplishing this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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878 views

1 answer

regex - Regular expression for numbers without leading zeros

I need a regular expression to match any number from 0 to 99. Leading zeros may not be included, this means that f.ex. 05 ... is ^[1-9][0-9]?$ See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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685 views

1 answer

regex - Emacs - regular expressions in Lisp need to be double-escaped - why?

I've been playing around with emacs lisp, and I wanted to write a little function to do a regular expression ... if anyone knew why this is? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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719 views

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regex - Multiline Regular Expression search and replace!

I've hit a wall. Does anybody know a good text editor that has search and replace like Notepad++ but can also ... ; replace newlog(1) Any ideas? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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796 views

1 answer

regex - How to detect if string contains 1 uppercase letter in PHP

Couldn't find a function for this. I'm assuming I need to use regex? I'm trying to do html redirects in ... if at least 1 capital letter exists. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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801 views

1 answer

regex - How to remove control characters from java string?

I have a string coming from UI that may contains control characters, and I want to remove all control characters except ... \p{Cntrl}", ""); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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616 views

1 answer

regex - How to define an Emacs command that uses `replace-string` for a specific string

In Emacs, I am processing a text document, converting from unicode plaintext to LaTeX. There are a few sets ... can run them repeatedly? Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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756 views

1 answer

regex - java email extraction regular expression?

I would like a regular expression that will extract email addresses from a String (using Java regular expressions). That really works. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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