backreference

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Regex for wrapping digits with curly braces?

I am trying to using Python\'s re.sub() to match a string with an e character and insert curly braces immediately after the e character and after the lastdigit. For example:[详细]

2023-04-09 01:44 分类：问答
Help with back reference regex in Vim

I am trying to write a regular expression in vi to match any whitespace character followed by any digit. Then, at each match, insert a dollar sign between the whitespace and the digit. Here is an exam[详细]

2023-04-07 01:21 分类：问答
Why is the rightmost character captured in backreference when using a character class with quantifiers?

If I have pattern ([a-z]){2,4} and string \"ab\", what would I expect to see in backre开发者_如何学编程ference \\1 ?[详细]

2023-04-06 20:24 分类：问答
Python - Modifying a backreference. Can it be done?

New to Python so please forgive my ignorance.I\'m trying to modify backreferenced strings in a regular expression.[详细]

2023-04-01 05:49 分类：问答
firefox opera custom search engine and mod_rewrite sites

In 开发者_StackOverflowfirefox and opera one can create a custom search engine but it passes along the search as a standard get or post variable. Is there anyway to embed that search term in the url f[详细]

2023-03-18 16:30 分类：问答
Problem with backreferences in C#'s regex

The goal is to extract time and date strings from this: Date - Thursday, June 2 2011 9:00PM [详细]

2023-03-10 18:14 分类：问答
How to delete () using re module in Python

I am in trouble for processing XML text. I want to delete () from my text as follows: from (apa-bhari(n)) to apa-bhari(n)[详细]

2023-03-05 20:11 分类：问答
Javascript: Reference Array Element using Regex Backreference

Basically, I\'m trying to replace parts of a string using elements from an associative array. However, I need to grab elements based on backreferences generated from capturing groups in a replace() ex[详细]

2023-02-25 07:11 分类：问答
How can I backreference matches in a recursive regular expression?

I have a string like this: $data = \'id=1 username=foobar comment=This is a sample comment\'; And I would like to remove the \\n in the third field (comment=...).[详细]

2023-02-20 19:52 分类：问答
Why not create a backreference?

I understand that putting ?: inside of the start of the parentheses of a regular expression will prevent it from creating a backreference, which is supposed to be faster.My question is, why do this?Is[详细]

2023-02-16 19:24 分类：问答