Recent questions tagged REGEX

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regex - what is the fastest substring search method in Java

I need to implement a way to search substring (needles) in a list of string (haystack) using Java. More ... please feel free to correct me. See Question&Answers more detail:os...

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

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607 views

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regex - Regular expression listing all possibilities

Given a regular expression, how can I list all possible matches? For example: AB[CD]1234, I want it to return ... , but couldn't find anything. See Question&Answers more detail:os...

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

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555 views

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regex - How do I make part of a regular expression optional in Ruby?

To match the following: On Mar 3, 2011 11:05 AM, "mr person" wrote: I have the following regular expression: ... , if not, it still matches? See Question&Answers more detail:os...

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

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672 views

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regex - grepl for a period "." in R?

Lets say I have a string "Hello." I want to see if this string contains a period: text <- "Hello." results ... this for the period. 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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812 views

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regex - How to escape plus sign on mac os x (BSD) sed?

I'm trying to find and replace one or more occurrences of a character using sed on a mac, sed from the BSD ... do to get the plus sign working? See Question&Answers more detail:os...

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

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709 views

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regex - Regular expression: zero or more occurrences of optional character /

What is the regular expression pattern to say: zero or more occurrences of the character / ? See Question&Answers more detail:os...

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

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591 views

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regex - Raw string and regular expression in Python

I'm confused about raw string in the following code: import re text2 = 'Today is 11/27/2012. ... explain these Four situations specifically? See Question&Answers more detail:os...

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

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746 views

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regex - Extract a substring between double quotes with regular expression in Java

I have a string like this: " @Test(groups = {G1}, description = "adc, def")" I want to extract "adc, def" ... regexp in Java, how should I do? See Question&Answers more detail:os...

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

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516 views

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regex - Java's Scanner vs String.split() vs StringTokenizer; which should I use?

I am currently using split() to scan through a file where each line has number of strings delimited by '~' ... I am missing something here? See Question&Answers more detail:os...

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

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750 views

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regex - Stripping HTML tags in PostgreSQL

How would you strip HTML tags in PostgreSQL such that the data inside the tags is preserved? I found some ... text between the tags too! See Question&Answers more detail:os...

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

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973 views

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regex - PHP: fastest way to check for invalid characters (all but a-z, A-Z, 0-9, #, -, ., $)?

I have to check the buffer input to a PHP socket server as fast as possible. To do so, I need to know if the input message ... 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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805 views

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regex - Remove non-ASCII characters from a string using python / django

I have a string of HTML stored in a database. Unfortunately it contains characters such as ? I want to replace these ... on how I can 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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1.1k views

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regex to match character in specific position

I need to come up with a regex to look for only letters A, F or E on the position 9 of a given text. I ... add the other 2 letters to the 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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545 views

1 answer

regex - How to remove text between tags in php?

Despite using PHP for years, I've never really learnt how to use expressions to truncate strings properly... which is ... href="link.html"></a> See Question&Answers more detail:os...

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

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621 views

1 answer

regex - Check number divisibility with regular expressions

Given a decimal number N as a string of digits, how do I check if it's divisible by M using regular ... get there" part is very educative. 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

1 answer

regex - A regular expression to remove a given (x)HTML tag from a string

Let's say I have a string holding a mess of text and (x)HTML tags. I want to remove all instances of a ... few levels over my pay grade? ;) See Question&Answers more detail:os...

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

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506 views

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regex - java split function

Can somebody help me in understanding how split in java works.I have the following code String temp_array[]; ... .main(simple_hello.java:15) See Question&Answers more detail:os...

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

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422 views

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regex - How can I expand a finite pattern into all its possible matches?

For example, given the pattern [a-zA-Z]_[0-9]{2} a function would take the pattern and return an array ... Perl would be preferred. 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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742 views

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regex - How do I remove duplicate characters and keep the unique one only in Perl?

How do I remove duplicate characters and keep the unique one only. For example, my input is: EFUAHUU UUUEUUUUH ... of the character in output. See Question&Answers more detail:os...

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

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770 views

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regex - Validating e-mail with regular expression VB.Net

I'm working on a small project in VB.Net where I get a input from a textbox, and need to verify that ... else something else happens.. end if See Question&Answers more detail:os...

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

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556 views

1 answer

regex - Easiest way to convert a URL to a hyperlink in a C# string?

I am consuming the Twitter API and want to convert all URLs to hyperlinks. What is the most effective way you've ... ://tinyurl.com/>blah</a> See Question&Answers more detail:os...

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

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1.3k views

1 answer

regex - Haproxy route and rewrite based on URI path

I am trying to setup an Haproxy to load balance requests on a few backends identified by the uri path. For ... Thanks in advance for your help! See Question&Answers more detail:os...

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

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538 views

1 answer

regex - How to find the 3rd occurrence of a pattern on a line

Today I had to align a table at only the first multiple spaces on a line. p.e. <ScrollWheelDown> move ... regex the same as using Tabular? 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 - Dollar sign in regular expression and new line character

I know that the dollar sign is used to match the character at the end of the string, to make sure that search does not ... around ([A-Za-z ]+ )$ See Question&Answers more detail:os...

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

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878 views

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regex - Regular expression for match all words without numbers

I have this string: " abalbal asldad 23 sadaskld 3123 adasdas " How to match only the words, without numbers.. ... first two, without others.. See Question&Answers more detail:os...

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

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934 views

1 answer

regex - Find last match with python regular expression

I want to match the last occurrence of a simple pattern in a string, e.g. list = re.findall(r"w+ AAAA w+ ... ", or should I use this workaround? See Question&Answers more detail:os...

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

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835 views

1 answer

regex - "Variable length lookbehind not implemented" but it isn't variable length

I have a very crazy regex that I'm trying to diagnose. It is also very long, but I have cut it down to just ... latter is not. Why did it start? See Question&Answers more detail:os...

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

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819 views

1 answer

regex - How to get the captured groups from Select-String?

I'm trying to extract text from a set of files on Windows using the Powershell (version 4): PS > Select- ... | Select-Object -Property Groups. See Question&Answers more detail:os...

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

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