Recent questions tagged Regex

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regex - How can I exclude some characters from a class?

Say I want to match a "word" character (w), but exclude "_", or match a whitespace character (s), but exclude "". How can I 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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755 views

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regex - What is the Regular Expression For "Not Whitespace and Not a hyphen"

I tried this but it doesn't work : [^s-] 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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939 views

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regex - Regular expression for password (at least 2 digits and one special character and minimum length 8)

I have been searching for regular expression which accepts at least two digits and one special character and minimum password ... zA-Z!@#$%0-9]* See Question&Answers more detail:os...

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

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537 views

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regex - hive regexp_extract weirdness

I am having some problems with regexp_extract: I am querying on a tab-delimited file, the column I'm checking ... wrong here? Thanks, Mario 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 - Regular expression for GB based and only numeric phone number

I want a regular expression code which allows only numeric phone number (e.g 1234567890) as well as GB ... allow only numeric number also. See Question&Answers more detail:os...

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

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706 views

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regex - example of a regular expression in jquery for phone numbers

I'm very new to jquery, I just want a reqular expression for validating phone numbers in jquery for one of my ... i need? Thanks in advance. See Question&Answers more detail:os...

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

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659 views

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regex - Why does BASH_REMATCH not work for a quoted regular expression?

The code is like this: #!/bin/bash if [[ foobarbletch =~ 'foo(bar)bl(.*)' ]] then echo "The regex ... 3.2$ Does anyone have ideas about 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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741 views

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regex - R split on delimiter (split) keep the delimiter (split)

In R you can use the strsplit function to split a vector on a delimiter(split) as follows: x <- "What is this? It' ... s|" ## [5] " Well Crazy." See Question&Answers more detail:os...

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

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531 views

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regex - Counting number of occurrences of a string inside another (Perl)

What is the fastest way to count the number of times a certain string appears in a bigger one? My best guess ... to analyze big amounts of data. See Question&Answers more detail:os...

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

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643 views

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regex - How to replace the first occurrence of a regular expression in Python?

I want to replace just the first occurrence of a regular expression in a string. Is there a convenient way to 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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791 views

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regex - Regular expression limit string size

How to limit string size for this regular expression? /^[a-z][a-z0-9]*(?:_[a-z0-9]+)*$/ I just need to add the quantifier {3,16}. See Question&Answers more detail:os...

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

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456 views

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regex - R grep: is there an AND operator?

Suppose I have the following data frame: User.Id Tags 34234 imageUploaded,people.jpg,more,comma,separated,stuff ... get the intended result? See Question&Answers more detail:os...

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

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419 views

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regex - Capturing Quantifiers and Quantifier Arithmetic

At the outset, let me explain that this question is neither about how to capture groups, nor about how to ... answer to demonstrate the feature. See Question&Answers more detail:os...

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

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762 views

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regex - Problem with regexp python and sqlite

I try to check a string with a pattern using a regex with python on a sqlite database. I have problem ... create_function("regexp", 2, regexp) See Question&Answers more detail:os...

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

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449 views

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regex - PHP regular expression - filter number only

I know this might sound as really dummy question, but I'm trying to ensure that the provided string is of ... would be very much 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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810 views

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regex - how to use a regular expression to extract json fields?

Beginner RegExp question. I have lines of JSON in a textfile, each with slightly different Fields, but there are ... to extract URL,TITLE,TAGS, See Question&Answers more detail:os...

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

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522 views

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regex - What are the differences between glob-style pattern and regular expression?

I've encountered situations where only glob-style patterns are supported and full regular expression support is not ... support regex at all? 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 - How to check, if a php string contains only english letters and digits?

In JS I used this code: if(string.match(/[^A-Za-z0-9]+/)) but I don't know, how to do it in PHP. See Question&Answers more detail:os...

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

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452 views

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regex - Regular expression for a hexadecimal number?

How do I create a regular expression that detects hexadecimal numbers in a text? For example, 0x0f4', ... ', and 8BADF00D'. See Question&Answers more detail:os...

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

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548 views

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regex - Email validation using regular expression in PHP

I am pretty much new with regular expression. I am developing a project in PHP and i need to validate email ... What is wrong with this code? 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

1 answer

regex - How can I replace newlines/line breaks with spaces in javascript?

I have a var that contains a big list of words (millions) in this format: var words = " car house home ... : car house home computer go went See Question&Answers more detail:os...

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

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550 views

1 answer

regex - Insert linefeed in sed (Mac OS X)

How do I insert a newline in the replacement part of sed? This code isn't working: sed "s/(1234)/ 1 ... differently than, say, Linux versions. See Question&Answers more detail:os...

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

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686 views

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regex - What's the difference between () and [] in regular expression patterns?

What is the difference between encasing part of a regular expression in () (parentheses) and doing it in [] (square ... this: (a-z0-9) ? See Question&Answers more detail:os...

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

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681 views

1 answer

regex - How can I insert a tab character with sed on OS X?

I have tried: echo -e "egg salad" | sed -E 's/[[:blank:]]+//g' Which results in: eggtsalad And... ... in: eggsalad What I would like: egg salad See Question&Answers more detail:os...

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

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458 views

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regex - Remove Sub String by using Python

I already extract some information from a forum. It is the raw string I have now: string = 'i think ... regular expression to remove the part. 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 - What does the "r" in pythons re.compile(r' pattern flags') mean?

I am reading through http://docs.python.org/2/library/re.html. According to this the "r" in pythons re.compile ... "pattern" is an exact match? See Question&Answers more detail:os...

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

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