Recent questions tagged regex

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regex - Beginning and end of words in sed and grep

I don't understand the difference between and < in GNU sed and GNU grep. It seems to me can ... something and something\>. 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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regex - Extract all numbers from a single string in R

Let's imagine you have a string: strLine <- "The transactions (on your account) were as follows: 0 3,000 ... the location of the first number. 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 - Is it possible to pad integers with zeros using regular expressions?

I have a series of numbers of different lengths (varying from 1 to 6 digits) within some text. I want to ... in a better expression than 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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regex - Exclusive Or in Regular Expression

Looking for a bit of regex help. I'd like to design an expression that matches a string with "foo" OR "bar ... or the other is present? Thanks! 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 - Replace chars if not match

I'm looking for a regular expression that removes illegal characters. But I don't know what the characters will ... 't match the regexp above. See Question&Answers more detail:os...

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

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633 views

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regex - regular expression for email validation in Java

I am using the follwoing regular expression (".+@.+\.[a-z]+") Bit it accepts #@#.com as a valid email. What's the pattern I should use? 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 Regexp to Match ASCII Characters

What regex would match any ASCII character in java? I've already tried: ^[\p{ASCII}]*$ but found that it didn't match lots ... >~`[]{}\/+=-\s]*$ See Question&Answers more detail:os...

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

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640 views

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regex - grepl in R to find matches to any of a list of character strings

Is it possible to use a grepl argument when referring to a list of values, maybe using the %in% ... character vector with multiple patterns See Question&Answers more detail:os...

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

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656 views

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regex - upper- to lower-case using sed

I'd like to change the following patterns: getFoo_Bar to: getFoo_bar (note the lower b) Knowing neither foo nor ... Maybe sed is not adapted? 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 - Javascript: what's the point of RegExp.compile()?

I've got a situation where I want to get a regexp from the user and run it against a few thousand ... constructor does the compile() itself? See Question&Answers more detail:os...

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

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519 views

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regex - Using Vim, how can I make CSS rules into one liners?

I would like to come up with a Vim substitution command to turn multi-line CSS rules, like this one: #main { ... the :%s/ commands to use. See Question&Answers more detail:os...

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

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572 views

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regex - Javascript equivalent of Perl's Q ... E or quotemeta()

In Perl regular expressions, you can surround a subexpression with Q and E to indicate that you want that ... don't have to bother. See Question&Answers more detail:os...

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

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487 views

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regex - Extract text from a string

How do I extract the "program name" from a string. The string will look like this : % O0033(SUB RAD ... of your answers will be 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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563 views

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regex - What does the forward slash mean within a JavaScript regular expression?

I can't find any definitive information on what / means in a JavaScript regex. The code replace(/ /g, '' ... where the previous match ended.' See Question&Answers more detail:os...

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

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570 views

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regex - find & replace commas with newline on Google Spreadsheet

I've been trying to figure out how to replace commas with line-breaks. I've tried using (/r/n/), char(10 ... , not converting it to a line-break See Question&Answers more detail:os...

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

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469 views

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regex - What's the most efficient way to find one of several substrings in Python?

I have a list of possible substrings, e.g. ['cat', 'fish', 'dog']. In practice, the list contains ... elegant Python/regex solution for 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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685 views

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regex - How can I split a string into chunks of two characters each in Perl?

How do I take a string in Perl and split it up into an array with entries two characters long each? I ... array containing F5 3C BB A4 76 See Question&Answers more detail:os...

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

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1.4k views

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regex - Laravel validate decimal 0-99.99

Laravel does not have a validation for decimal, so I need a regex or other validation method to validate a ... values before or after decimal See Question&Answers more detail:os...

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

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579 views

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regex - How do I return only the matching regular expression when I select-string(grep) in PowerShell?

I am trying to find a pattern in files. When I get a match using Select-String I do not want the entire ... Powershell equivalent of a grep -o See Question&Answers more detail:os...

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

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720 views

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regex - Find Hyperlinks in Text using Python (twitter related)

How can I parse text and find all instances of hyperlinks with a string? The hyperlink will not be in the html ... to reproduce it in python :( See Question&Answers more detail:os...

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

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525 views

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regex - Regexp for subdomain

Does anyone know how to write a regexp that only allows a-zA-Z0-9.- (letters, numbers, dots, and dash) BUT ... want to because @ is not 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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465 views

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regex - How can I match double-quoted strings with escaped double-quote characters?

I need a Perl regular expression to match a string. I'm assuming only double-quoted strings, that a " is a ... direction on how to handle 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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603 views

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regex - .htaccess redirect domain to subdirectory without changing URL

I have the following setup: -> domain1.com is my main domain and also document root -> domain2.com is another ... but I am currently clueless :/ See Question&Answers more detail:os...

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

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776 views

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regex - Regular Expression to match only odd or even number

I have a list of textual entries that a user can enter into the database and I need to validate these inputs with ... Regex. ^[123][02468]$ See Question&Answers more detail:os...

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

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779 views

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regex - PHP strip punctuation

Let's say I have this: $hello = "Hello, is StackOverflow a helpful website!? Yes!"; and I want ... How can I do that? See Question&Answers more detail:os...

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

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1.2k views

1 answer

regex - How to validate password strength with Angular 5 Validator Pattern

I need to validate the strength of a password input form field. The requirements are: at least one lowercase char at least one ... ') ]] }); } } See Question&Answers more detail:os...

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

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507 views

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regex - Regular expression generator/reducer?

I was posed an interesting question from a colleague for an operational pain point we currently have, and am ... all of the source values? See Question&Answers more detail:os...

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

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576 views

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regex - ignoring changes matching a string in git diff

I've made a single simple change to a large number of files that are version controlled in git and I'd like ... diff with the unix diff tool. See Question&Answers more detail:os...

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

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