Recent questions tagged regex

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regex - Can regular expressions work with different languages?

English, of course, is a no-brainer for regex because that's what it was originally developed in/for: Can regular ... はこの文字を理解でき設定？ 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 - Whats the difference between sed -E and sed -e

I'm working on some old code and I found that I used to use sed -E 's/findText/replaceWith/g' #findText would ... ... GNU sed version 4.2.1 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 - Does w match all alphanumeric characters defined in the Unicode standard?

Does Perl's w match all alphanumeric characters defined in the Unicode standard? For example, will w match all (say) Chinese ... =~ /^w+$/); } 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 can I match spaces with a regexp in Bash?

I expect the code below to echo "yes", but it does not. For some reason it won't match the single quote. Why? ... echo "yes" else echo "no" fi 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 - Python re infinite execution

I'm trying to execute this code : import re pattern = r"(w+)*([ws]+)*/$" re_compiled = re.compile( ... and Python 3.2 with identical results. 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 - Java Pattern Matcher: create new or reset?

Assume a Regular Expression, which, via a Java Matcher object, is matched against a large number of strings: ... new Matcher object every time? 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 prefix a positive number with plus sign in PHP

I need to design a function to return negative numbers unchanged but should add a + sign at the start of the ... so the quicker the better. 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 rows Oracle SQL

After searching the forums I have come up with the following but its not working :/ I have a table with the ... BY ID; Any help is appreciated 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 - Extract string with Python re.match

import re str="x8f8dL:s://www.qqq.zzz/iziv8ds8f8.dafidsao.dsfsi" str2=re.match("[a-zA-Z]*//([a-zA-Z]*)",str) ... 0) and m.group(1) are the same. 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 - RegularExpressionAttribute - How to make it not case sensitive for client side validation?

I have a string that I use for client side validation: private const String regex = @"^(?:(?:d{5}(?:s*-s ... (valid or not). What am I missing? 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 - What's the meaning of a number after a backslash in a regular expression?

(a|b)1 What does 1 mean in this expression? See Question&Answers more detail:os...

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

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637 views

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regex - Split by Caps in Javascript

I am trying to split up a string by caps using Javascript, Examples of what Im trying to do: "HiMyNameIsBob" - ... , any help would be great. 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 - When is it best to use Regular Expressions over basic string splitting / substring'ing?

It seems that the choice to use string parsing vs. regular expressions comes up on a regular basis for me ... and up-voted as accordingly. 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 - Splitting strings through regular expressions by punctuation and whitespace etc in java

I have this text file that I read into a Java application and then count the words in it line by line. ... for the purpose I have described? See Question&Answers more detail:os...

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

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568 views

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regex - explain gitignore pattern matching

I have the following directory tree: > #pwd is the repo > tree -a . ├── .git │?? |..... ├── . ... " or "tools/perf/Documentation/perf.html". See Question&Answers more detail:os...

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

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797 views

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regex - How to replace backward slash to forward slash using java?

I'm importing a CSV file to MySQL database. This can be done using java.mysql support for forward slash in file ... sample.csv How is that done? See Question&Answers more detail:os...

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

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647 views

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regex - Replace newlines with literal

This stackoverflow question has an answer to replace newlines with sed, using the format sed ':a;N;$!ba;s/ / / ... ,"visibility":"public"}]}]} See Question&Answers more detail:os...

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

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678 views

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regex - Regular Expression to Match All Comments in a T-SQL Script

I need a Regular Expression to capture ALL comments in a block of T-SQL. The Expression will need to ... takes everything BUT the comments. See Question&Answers more detail:os...

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

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812 views

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regex - Matching balanced parenthesis in Ruby using recursive regular expressions like perl

I have been looking for a way to match balanced parenthesis in a regex and found a way in Perl, that ... 1.9 Regular Expressions Sample Chapter 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 - Python: Check if a string contains chinese character?

A string maybe this ipath= "./data/NCDC/上海/虹桥/9705626661750dat.txt" or this ipath = './data/NCDC/ciampino/6240476818161dat ... ', ipath) # => [] See Question&Answers more detail:os...

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

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767 views

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regex - How do I match accented characters with PHP preg?

I'd like to give my users the option to not only fill in letters and numbers, but also special letters like the á , ... $reg = '/^[w-]*$/'; See Question&Answers more detail:os...

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

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1.1k views

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regex - Include Arabic characters in JavaScript regular expression?

So im using jquery validation on my script to only allows certain characters. I've had a request to allow the ... or dashes are allowed." ); 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 - htaccess force https and redirect www to non-www, but no other subdomains

I know there are many similar threads, but none of them seems to match my exact problem. Here is what I'm ... 'm aware that isn't possible. 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 are lookbehind assertions not supported in Javascript?

Recently I realized (by some embarrassment) that regex lookbehind assertions were not possible in Javascript. What is the ( ... me as a bit odd. 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 - Does lookbehind work in sed?

I created a test using grep but it does not work in sed. grep -P '(?<=foo)bar' file.txt This works correctly ... as output, but it did not work. See Question&Answers more detail:os...

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

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889 views

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regex - How to replace non-printable unicode characters (Javascript)

I've already wasted a good amount of time dealing with strings (generated by some other source) and I ... can later remove them completely. See Question&Answers more detail:os...

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

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539 views

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regex - Creating a custom categorized corpus in NLTK and Python

I'm experiencing a bit of a problem which has to do with regular expressions and ... (~nltk_datacorporamovie_reviews). See Question&Answers more detail:os...

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

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821 views

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regex - Regular Expression for accurate word-count using JavaScript

I'm trying to put together a regular expression for a JavaScript command that accurately counts the number of ... regardless of input method? See Question&Answers more detail:os...

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

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