Recent questions tagged RegEx

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regex (in PHP) to match & that aren't HTML entities

Here's the goal: to replace all standalone ampersands with & but NOT replace those that are already part ... to do that with preg_replace. See Question&Answers more detail:os...

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

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812 views

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regex - Checking for a valid url using Javascript Regular Expressions

What is the expression I should use in order to check for a valid url in javascript? See Question&Answers more detail:os...

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

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807 views

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regex - How to implement regular expression NFA with character ranges?

When you read such posts as Regex: NFA and Thompson's algorithm everything looks rather straightforward until you realize ... to DFA as well. See Question&Answers more detail:os...

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

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920 views

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regex - String replace in Java

I currently have a string which contains the characters A, B and C for example the string looks like "A some other ... replace("C", "'C'") See Question&Answers more detail:os...

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

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regex - MongoDB case insensitive query on text with parenthesis

I have a very annoying problem with a case insensitive query on mongodb. I'm using MongoTemplate in a web application and ... " : "iu"}} 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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788 views

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regex - Apply regular expression substitution globally to many files with a script

I want to apply a certain regular expression substitution globally to about 40 Javascript files in and under a ... I might be missing? See Question&Answers more detail:os...

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

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1.0k views

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regex - How to use regexp get url pattern in golang?

How to use regular expression matching URL, which does decide to use the corresponding function processing package main ... (r.URL.Host) } See Question&Answers more detail:os...

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

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930 views

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regex - Sed substitution possible with arithmetic involved?

File I need to modify contains the following: block: 16, size: 16, start: 8, length: 4 I'd like ... in the matching and substituting process. See Question&Answers more detail:os...

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

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918 views

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regex - How to escape $ in PHP using preg_replace?

I am using preg_replace to escape special characters: $tmpStr=preg_replace("/?/", "?", $tmpStr); $tmpStr= ... escape the dollar sign correctly? See Question&Answers more detail:os...

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

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regex - Python/Pandas: How to Match List of Strings with a DataFrame column

I want to compare two columns: Description and Employer. I want to see if any keywords from Employer are found ... Cansel, Survey, Equipment] No See Question&Answers more detail:os...

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

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977 views

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regex - R: fastest way to extract all substrings contained between two substrings

I am on the lookout for an efficient way to extract all matches between two substrings in a character string. E. ... ? Or are there better ways? See Question&Answers more detail:os...

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

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1.1k views

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regex - How to parse CSV data that contains newlines in field using JavaScript

Given a CSV file that has newline/return characters in certain fields, how do we parse the data without ... discovered a JS-focussed answer. See Question&Answers more detail:os...

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

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745 views

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regex - Why are people using regexp for email and other complex validation?

There are a number of email regexp questions popping up here, and I'm honestly baffled why people are using ... custom parser/validator. -Adam See Question&Answers more detail:os...

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

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1.7k views

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regex - Perl replace multiple strings simultaneously

Is there any way to replace multiple strings in a string? For example, I have the string hello world what a ... it's not working? 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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1.2k views

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regex - Regular Expression, pattern matching in xsd

I was wondering how to make a regular expression for any character except * and + . I've tried ([^*+]) and ([^*+ ... current reg ex: /^[^*+]+$/ See Question&Answers more detail:os...

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

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1.1k views

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regex - Regular expression using negative lookbehind not working in Notepad++

I have a source file with literally hundreds of occurrences of strings flecha.jpg and flecha1.jpg, but I need to ... regex, see here (RegExr) See Question&Answers more detail:os...

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

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926 views

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regex - trim in javascript ? what this code is doing?

I was looking for a trim function in JavaScript which doesn't exist and some code on Googling suggests that use: ... know what it is doing. See Question&Answers more detail:os...

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

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899 views

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regex - PHP: preg_replace (x) occurrence?

I asked a similar question recently, but didn't get a clear answer because I was too specific. This one is more ... $r, $this->source); } } See Question&Answers more detail:os...

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

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902 views

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regex - Remove/Redirect index.php from url to prevent duplicate urls

Please read the question carefully before marking as duplicate. We all know, that using in .htaccess: ... can contain any characters) See Question&Answers more detail:os...

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

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782 views

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regex - Regular Expressions - how to replace a character within quotes

Hello regular expression experts, There has never been a string manipulation problem I couldn't resolve with regular ... ://www.google.com/ See Question&Answers more detail:os...

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

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884 views

1 answer

regex - Javascript Regular Expression to match 5 or 9 digit zipcode

I have a similar issue as my recent post but with a zip code validator, I am trying to convert over to ... ? Is another escape character needed? See Question&Answers more detail:os...

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

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887 views

1 answer

regex - How to do str_extract with base R?

I am balancing several versions of R and want to change my R libraries loaded depending on which R and which ... release"), value = TRUE) See Question&Answers more detail:os...

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

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865 views

1 answer

regex - Left Trim in Javascript

there are lots of scripts out there to trim a string in javascript, but none how to Left Trim String. This ... help is much appreciated. Cheers See Question&Answers more detail:os...

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

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986 views

1 answer

regex - Regular expression to define some binary sequence

How would you write a regular expression to define all strings of 0's and 1's that, as a binary number, represent ... be: 11 110 1001 1100 1111 See Question&Answers more detail:os...

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

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989 views

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regex - How to switch/rotate every two lines with sed/awk?

I have been doing this by hand and I just can't do it anymore-- I have thousands of lines and I ... Good morning! annyonghaseyo hello watashi me See Question&Answers more detail:os...

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

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893 views

1 answer

regex - RewriteCond to skip rule if file or directory exists

I am trying to adjust my htacess file to skip the rewrite rule if the file or directory exists, but when the ... folder. Thanks for any help! See Question&Answers more detail:os...

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

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1.0k views

1 answer

regex - Regular expression for address field validation

I am trying to write a regular expression that facilitates an address, example 21-big walk way or 21 St.Elizabeth's ... =^[A-Za-z-0-99999999' See Question&Answers more detail:os...

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

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819 views

1 answer

regex - Editing elements in a list in python

How do I remove a character from an element in a list? Example: mylist = ['12:01', '12:02'] I want to ... But that doesn't seem to work. Help! See Question&Answers more detail:os...

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

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