Recent questions tagged regex

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regex - MongoDB, performance of query by regular expression on indexed fields

I want to find an account by name (in a MongoDB collection of 50K accounts) In the usual way: we find ... / indexes will help!' MongoDB $regex See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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regex - Mongodb match accented characters as underlying character

In MongoDB "db.foo.find()" syntax, how can I tell it to match all letters and their accented versions? For ... all accented i characters]s/ }) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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regex - Regular expression to match common SQL syntax?

I was writing some Unit tests last week for a piece of code that generated some SQL statements. I was trying ... live longer than the project. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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regex - How to find and replace nth occurrence of word in a sentence using python regular expression?

Using python regular expression only, how to find and replace nth occurrence of word in a sentence? For example: str ... not get what I wanted. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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regex - Matching exact string with JavaScript

How can I test if a RegEx matches a string exactly? var r = /a/; r.test("a"); // returns true r.test("ba ... (r, "a"); // should return true See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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regex - Split string into sentences in javascript

Currently i am working on an application that splits a long column into short ones. For that i split the entire text into ... , "? " and "! "? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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regex - Why can regular expressions have an exponential running time?

It is possible to write a Regex which needs in some cases exponential running time. Such an example is (aa|aa ... why they compute so slow? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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regex - How to match any string from a list of strings in regular expressions in python?

Lets say I have a list of strings, string_lst = ['fun', 'dum', 'sun', 'gum'] I want to make a ... and match them all separately to the string? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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regex - Weird backslash substitution in Ruby

I don't understand this Ruby code: >> puts '\ <- single backslash' # <- single backslash >> puts '\ <- 2x a, ... ? this happens on 1.8 and 1.9. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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regex - sed join lines together

what would be the sed (or other tool) command to join lines together in a file that do not end w/ the character '0' ... Tying Tools|||||d|d|0||0 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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664 views

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regex - Regular expression for parsing name value pairs

Can someone provide a regular expression for parsing name/value pairs from a string? The pairs are separated ... ",Parameters="Some,Parameters" See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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regex - Javascript RegExp for splitting text into sentences and keeping the delimiter

I am trying to use javascript's split to get the sentences out of a string but keep the delimiter eg !?. So far I ... know of a way to do this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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567 views

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regex - DataAnnotations validation (Regular Expression) in asp.net mvc 4 - razor view

The DataAnnotations validator not working in asp.net mvc 4 razor view, when using the special characters in the ... i have the same issue. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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734 views

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regex - Regular Expression Opposite

Is it possible to write a regex that returns the converse of a desired result? Regexes are usually inclusive - ... or am I thinking incorrectly? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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534 views

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regex - Allowed characters for CSS identifiers

What are the (full) valid / allowed charset characters for CSS identifiers id and class? Is there a regular ... ? Is it browser agnostic? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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regex - Match at every second occurrence

Is there a way to specify a regular expression to match every 2nd occurrence of a pattern in a string? ... occurrences at positions 2 and 4 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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608 views

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regex - Finding the complement of a DFA?

I am asked to show DFA diagram and RegEx for the complement of the RegEx (00 + 1)*. In the previous ... have a real complement? Thank you See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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800 views

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regex - Fully qualified domain name validation

Is there a quick and dirty way to validate if the correct FQDN has been entered? Keep in mind there is no DNS ... via regex/awk/sed. Any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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689 views

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regex - "Unknown escape sequence" error in Go

I have the following function written in Go. The idea is the function has a string passed to it and returns the ... , but apparently I'm wrong. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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613 views

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regex - Ruby regular expression using variable name

Is is possible to create/use a regular expression pattern in ruby that is based on the value of a variable name ... of a variable's content. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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495 views

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regex - Set RewriteBase to the current folder path dynamically

Is there any way to set RewriteBase to the path current folder (the folder which the .htaccess file is ... like RewriteBase /%{current_folder}/ See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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734 views

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regex - Php - regular expression to check if the string has chinese chars

I have the string $str and I want to check if it`s content has Chinese chars or not (true/false) $str = ... you please help me? Thanks! Adrian See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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515 views

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regex for zip-code

Possible Duplicate: What is the ultimate postal code and zip regex? I need Regex which can satisfy all my ... be much appreciated. Thanks ! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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890 views

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regex - Add slash to the end of every url (need rewrite rule for nginx)

I try to get an "/" to every urls end: example.com/art should example.com/art/ I use nginx as webserver. I ... I think i should a rewrite rule?) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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regex - Remove all non-"word characters" from a String in Java, leaving accented characters?

Apparently Java's Regex flavor counts Umlauts and other special characters as non-"word characters" when I use Regex. ... to realize I forgot ?? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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regex - Extract substring using regexp in plain bash

I'm trying to extract the time from a string using bash, and I'm having a hard time figuring it out. My ... if the answer uses sed or awk See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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970 views

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regex - How to do a non-greedy match in grep?

I want to grep the shortest match and the pattern should be something like: <car ... model=BMW ...> .. ... and the input is multiple lines. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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625 views

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regex - Python regular expression for HTML parsing (BeautifulSoup)

I want to grab the value of a hidden input field in HTML. <input type="hidden" name="fooId" value="12- ... to parse the HTML for the value? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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