Recent questions tagged RegEx

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regex - Javascript replace() with case-change

Is there an easy way to change the case of a matched string with javascript? Example String : <li>something</li> ... The method, not the regex. 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 to parse import statements in python

can someone help me writing single regex to get module(s) from python source line? from abc.lmn import pqr from abc.lmn ... :?[(s)as(s)<alias>] See Question&Answers more detail:os...

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

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880 views

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regex - How to remove CTRL-A characters from file using SED?

I want to remove all "^A" control characters from a file using SED. I can remove all control characters using ... I specify "^A" specifically? See Question&Answers more detail:os...

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

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886 views

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regex - Regular expression for finding a regular expression?

Does anyone have code for finding a file that contains a regular expression? I would assume you could have two different ... how would I do 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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880 views

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regex - Java String.replaceFirst() that takes a "starting from" argument

I need to replace a word in a string looking like "duh duh something else duh". I only need to replace ... other way of solving this? 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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995 views

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regex - Remove single line breaks, keep "empty" lines

Say I have text like the following text selected with the cursor: This is a test. This is a test. This is a ... ) Any thoughts how 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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892 views

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regex - Pre-routing with querystrings with Express in Node JS

I'm trying to use express to parse the querystring in case certain parameters are set and execute a ... processed within this application. 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 - Why javascript string match includes undefined

I have a regex that is more or less used like this: '(801) 555-1234'.match(/^(1[-. ]?)?(?[0-9]{ ... , and why does the flag make the difference? See Question&Answers more detail:os...

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

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991 views

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regex - Get a list of all Java reserved Keywords

I'm looking for a way to retrieve all the saved keywords in Java into some kind of data structure. For ... match my string against it? 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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949 views

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regex - JavaScript Regular Expression - Extract number from next to word

Been a long time since I have touched regular expressions. It's simple but I am pulling my hair out over it. I ... will be a life saver! 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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924 views

1 answer

regex - grep with regexp: whitespace doesn't match unless I add an assertion

GNU grep 2.5.4 on bash 4.1.5(1) on Ubuntu 10.04 This matches $ echo "this is a line" | grep ' ... also shows a match. Whats the difference here? See Question&Answers more detail:os...

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

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915 views

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regex - How do I count the number of words in a text (string)?

I have this string vector (for example): str <- c("this is a string current trey", "feather rtttt", "tusla ... How do I get around this problem? See Question&Answers more detail:os...

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

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1.3k views

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regex - Sed replace variable in double quotes

I've created a bash script that takes a parameter. I want to pass that parameter to sed to replace an ... string in quotes with the variable? See Question&Answers more detail:os...

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

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848 views

1 answer

regex - Why does "Year 2010" =~ /([0-4]*)/ results in empty string in $1?

If I run "Year 2010" =~ /([0-4]*)/; print $1; I get empty string. But "Year 2010" =~ /([0-4]+)/; print $1; outputs "2010". Why? 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

1 answer

regex - How to set Apache conditional header based on URL?

I want to set different HTTP header depending on the URL. In my particular case I want a specific URL (e.g. ... no match for the If condition. 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 - How to remove new lines within double quotes?

How can I remove new line inside the " from a file? For example: "one", "three four", "seven" So I ... that's file per character with program? See Question&Answers more detail:os...

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

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1.5k views

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regex - Split on first/nth occurrence of delimiter

I am trying something I thought would be easy. I'm looking for a single regex solution (though others are welcomed for ... loc + 1, nchar(x))) See Question&Answers more detail:os...

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

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911 views

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regex - In perl, backreference in replacement text followed by numerical literal

I'm having trouble with a backreference in my replacement text that is followed by a literal. I have tried the ... m using perl 5.12.4. See Question&Answers more detail:os...

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

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1.3k views

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regex - R: How to replace space (' ') in string with a *single* backslash and space (' ')

I've searched many times, and haven't found the answer here or elsewhere. I want to replace each space ' ' in ... on with R's regex engine. See Question&Answers more detail:os...

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

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947 views

1 answer

regex - Flex: replace all spaces with comma

im new with regexp, so can i ask for some assistance Using string.replace function what code that can replace ... ,over,the,lazy dog. Thanks See Question&Answers more detail:os...

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

0 votes

903 views

1 answer

regex - How do I grab last number in a string in PHP?

How can I get 23 instead of 1 for $lastnum1? $text = "1 out of 23"; $lastnum1 = $this->getEval(eregi_replace("[^* out of]", '', $text)); See Question&Answers more detail:os...

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

0 votes

1.1k views

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regex - MySQL REGEXP query - accent insensitive search

I'm looking to query a database of wine names, many of which contain accents (but not in a uniform way, and ... it should be. Any suggestions?! 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 - Do all regular expressions halt?

Is there any regular expression that will, for some input string, search for a match forever? 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 - Remove leading zeroes but not all zeroes

How can I remove all the leading zeroes but leave a final zero if the value only contains zeroes? for example: ... all the zeroes in this case. 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

1 answer

regex - Javascript Performance: How come looping through an array and checking every value is faster than indexOf, search and match?

This came as a huge surprise for me, and I'd like to understand this result. I made a test in jsperf that ... fastest, that one I can believe. See Question&Answers more detail:os...

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

0 votes

1.1k views

1 answer

regex - PHP preg_match get in between string

I'm trying to get the string hello world. This is what I've got so far: $file = "1232#hello world#"; preg_match("#1232#(.*)##", $file, $match) 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

1 answer

regex - How can I match everything that is after the last occurrence of some char in a perl regular expression?

For example, return the part of the string that is after the last x in axxxghdfx445 (should return 445). See Question&Answers more detail:os...

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

0 votes

1.0k views

1 answer

regex - Detect re (regexp) object in Python

I wonder what is the proper pythonic backward- and forward-compatible method how check if an object is compiled re ... might be a better way.. See Question&Answers more detail:os...

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

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