negative-lookahead

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regex parser and custom escape chacter

I have a string that I\'d like to pick out sub-strings from that start and end with a plus sign. example:[详细]

2023-04-12 02:24 分类：问答
Mod Rewrite Regex - Multiple Negative Lookaheads

I currently have the working Mod Rewrite Regex: RewriteEngine On RewriteCond %{QUERY_STRING} ^(.*)$ RewriteRule ^(.*/)?((?:cmd)[^/]*)/((?!(?:cmd)[.+]*)(.+)) $1?$2=$3&%1 [L][详细]

2023-03-20 18:30 分类：问答
Regex - Escape with Negative Lookahead

I have the following JSON-encoded string: $json = \'\"|\\t|\\n|\\\\\\u0027|\\\\\\u0022|\"\'; What is the most efficient way to escape all the (already) escaped chars / codepoints except \\\\\\u0开发[详细]

2023-03-03 20:24 分类：问答
Using zero-width assertions negative lookahead to match a string that does's contains string "abc"

Hi all: I\'m trying using zero-开发者_C百科width assertions negative lookahead to match a string that does\'s contains string \"abc\",and this is what I got:[详细]

2023-02-19 10:49 分类：问答
Regex matching on to extract multi-line text regions (C#)

I\'m looking to capture text regions in a large text block, created in the following format: ... [region:region-name][详细]

2023-02-11 09:35 分类：问答
Regular expressions negative lookahead

I\'m doing some regular expression gymnastics. I set myself the task of trying to search for C# code where there is a usage of the as-operator not followed by a null-check within a reasonable amount o[详细]

2023-02-09 14:32 分类：问答
Javascript RegExp replace with negative lookahead

I am trying to replace some value in the query string of the current page using JS. Eg: from开发者_如何转开发 category=Old Value to category=New Value.[详细]

2023-01-16 20:39 分类：问答
Perl regex using negative look? can't seem to figure out how to do this properly

I\'m trying to get this to work with perl\'s regex but can\'t seem to figure it out.. I want to grab any url that has \".website.\" in it, except ones that are like this (with \"en\" preceding \".webs[详细]

2023-01-07 11:32 分类：问答
Regex to match all permutations of {1,2,3,4} without repetition

I am implementing the following problem in ruby. Here\'s the pattern that I want : 1234, 1324, 1432, 1423, 2341 and so on[详细]

2023-01-04 06:23 分类：问答
Complex(?) regex: Is expression, but not another

(If you can make a better title, please do) Hi, I need to make sure a string matches the foll开发者_如何转开发owing regex:[详细]

2023-01-03 01:47 分类：问答

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negative-lookahead

regex parser and custom escape chacter

Mod Rewrite Regex - Multiple Negative Lookaheads

Regex - Escape with Negative Lookahead

Using zero-width assertions negative lookahead to match a string that does's contains string "abc"

Regex matching on to extract multi-line text regions (C#)

Regular expressions negative lookahead

Javascript RegExp replace with negative lookahead

Perl regex using negative look? can't seem to figure out how to do this properly

Regex to match all permutations of {1,2,3,4} without repetition

Complex(?) regex: Is expression, but not another

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