re2 | friendly alternative to backtracking regular expression | Regex library

 by   google C++ Version: 2023-06-02 License: BSD-3-Clause

kandi X-RAY | re2 Summary

kandi X-RAY | re2 Summary

re2 is a C++ library typically used in Utilities, Regex applications. re2 has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

This is the source code repository for RE2, a regular expression library. For documentation about how to install and use RE2, visit
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            kandi-support Support

              re2 has a medium active ecosystem.
              It has 7876 star(s) with 1121 fork(s). There are 239 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 0 open issues and 349 have been closed. On average issues are closed in 57 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of re2 is 2023-06-02

            kandi-Quality Quality

              re2 has 0 bugs and 0 code smells.

            kandi-Security Security

              re2 has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              re2 code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              re2 is licensed under the BSD-3-Clause License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              re2 releases are available to install and integrate.
              It has 841 lines of code, 27 functions and 5 files.
              It has high code complexity. Code complexity directly impacts maintainability of the code.

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            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of re2
            Get all kandi verified functions for this library.

            re2 Key Features

            No Key Features are available at this moment for re2.

            re2 Examples and Code Snippets

            RegEx to accept String, # and a number
            Pythondot img1Lines of Code : 2dot img1License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            ^(BUG|bug|Bug) *(?:# *)?\d{5,6}$
            
            Regex in Google Analytics v4 to fetch pagePath not containing "?"
            Pythondot img2Lines of Code : 2dot img2License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            ^([^?\r\n]+)$
            
            Python Regular Expressions to NFA
            Pythondot img3Lines of Code : 59dot img3License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            try:
                import re2 as re
                re.set_fallback_notification(re.FALLBACK_WARNING)
            except ImportError:
                # latest version was for Python 2.6
            else:
                import re
            
            import re
            try:
                import re2
                re2.set_fallback_not
            How can I use Regex to find a string of characters in alphabetical order using Python?
            Pythondot img4Lines of Code : 8dot img4License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            ((?:a+(?(?!b)(*ACCEPT))|b+(?(?!c)(*ACCEPT))|c+(?(?!d)(*ACCEPT))|d+(?(?!e)(*ACCEPT))|e+(?(?!f)(*ACCEPT))|f+(?(?!g)(*ACCEPT))|g+(?(?!h)(*ACCEPT))|h+(?(?!i)(*ACCEPT))|i+(?(?!j)(*ACCEPT))|j+(?(?!k)(*ACCEPT))|k+(?(?!l)(*ACCEPT))|l+(?(?!m)(*ACCE
            Google bigquery python client library SQL select regex error
            Pythondot img5Lines of Code : 9dot img5License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            """
            SELECT
              REGEXP_EXTRACT(REGEXP_REPLACE(content, r'.*(\\n)', ''),
                             r'pd\.([^”,\.\(\,\`) ’:\[\]\/\\={}]*)')
            FROM
              [fh-bigquery:github_extracts.contents_py]
            LIMIT 10
            """
            

            Community Discussions

            QUESTION

            How to Keep rows of multi-line cells containing a keyword in google sheets
            Asked 2022-Apr-04 at 15:23

            I'm trying to keep lines that contain the word "NOA" in a column A which has many multi-line cells as can be viewed in this Google Spreadsheet.

            If "NOA" is present then, I would like to keep the line. The input and output should look like the image which I have "working" with too-many helper cells. Can this be combined into a single formula?

            Theoretical Approaches: I have been thinking about three approaches to solve this:

            1. ARRAYFORMULA(REGEXREPLACE - couldn't get it to work
            2. JOIN(FILTER(REGEXMATCH(TRANSPOSE - showing promise as it works in multiple steps
            3. Using the QUERY Function - unfamiliar w/ function but wondering if this function has a fast solution

            Practical attempts:

            FIRST APPROACH: first I attempted using REGEXEXTRACT to extract out everything that did not have NOA in it, the Regex worked in demo but didn't work properly in sheets. I thought this might be a concise way to get the value, perhaps if my REGEX skill was better?

            ...

            ANSWER

            Answered 2022-Apr-04 at 15:23

            Here's one way you can do that:

            Source https://stackoverflow.com/questions/71738288

            QUESTION

            Cannot seem to regexp extract a word on URL (Data Studio)
            Asked 2022-Mar-16 at 19:41

            I read from somewhere that Datastudio use little bit different Regular Expression from other places: that it uses RE2. I, however, manage to find a site to test for RE2 regex and able to get it running, but it was not working on Data studio.

            I have this URL I wanted to extract:

            ...

            ANSWER

            Answered 2022-Mar-16 at 19:41

            You can use several solutions here.

            Solution 1: matching digits after a specific string (here, news-)

            Source https://stackoverflow.com/questions/71498945

            QUESTION

            Any substitution for the negative lookahead in regular expression?
            Asked 2022-Mar-08 at 13:48

            I'm using regular expression to extract some country data in BigQuery. And I don't know how to extract the text I want from it. This is the example records I use.

            country China Anhui Univ Chinese Med, Affiliated Hosp 1, Expt Ctr Clin Res, Sci Res Dept, 117 Meishan Rd, Hefei 230031, Anhui, 12, Peoples R China Meluna Res, Geldermalsen, Netherlands; [Wiegant, Frederik Anton Clemens] Univ Utrecht, Utrecht, Netherlands

            I wanted to extract the last comma-followed words Peoples R China, Netherlands from the text, so I used the negative lookahead to extract them.

            ...

            ANSWER

            Answered 2022-Mar-08 at 13:47

            QUESTION

            How to capture subdomain in nginx ingress
            Asked 2022-Feb-13 at 05:02

            I want to capture subdomain and rewrite URL with /subdomain, For example bhautik.bhau.tk rewrite to bhau.tk/bhautik.

            I also https://github.com/google/re2/wiki/Syntax tried group syntax

            Here is my nginx ingress config:

            ...

            ANSWER

            Answered 2022-Feb-12 at 14:19

            I believe you want a redirect instead of rewrite. Here is the server-snippet you need:

            Source https://stackoverflow.com/questions/71089917

            QUESTION

            GLMER model produces different values for fitted.values() and predict() on same data
            Asked 2022-Jan-29 at 19:22

            I've trained a pretty complex (random intercept and slope) mixed logistic model which I'm then using to predict new data. My predictions were way off so I compared the predicted values for my original data and noticed that they are very different from my fitted.values(). E.g. taking just the first data point, the fitted value is 0.359, the predicted value (predict(model, newdata=data, type="response") is 0.0585. I'm pretty sure the issue relates to the random effects, because if I predict the same data point with only fixed effects I get 0.707, which is what I'd expect, and random effects only gives 0.0252 which is very wrong.

            You can see the different random effect groups by plotting fitted vs predicted (below) This also shows how the gradients within groups are the same so it looks like a problem with the intercepts rather than the slopes.

            Any help would be really appreciated!

            EDIT: In case it helps, the formula basically looks like this:

            ...

            ANSWER

            Answered 2022-Jan-29 at 19:22

            QUESTION

            Trying to convert plural words to singular words using regex but want to ignore a few words
            Asked 2022-Jan-08 at 21:43

            I am currently trying to replace some of the plural words like removing "s" from "birds" and replacing it as "bird" in bigquery

            but I want them to ignore a few words like "less", "james", "this".

            I was able to come up with this which ignores the "less" but still butchers james.

            ...

            ANSWER

            Answered 2022-Jan-08 at 21:43

            You can use an alternation here, a regex with two alternatives. In the first alternative, you can capture all the words that are exceptions, into Group 1, and in the second one, use your regex. The replacement will be both group values concatenated:

            Source https://stackoverflow.com/questions/70628801

            QUESTION

            Regex using re2
            Asked 2022-Jan-06 at 20:54

            I am using re2 (https://github.com/google/re2/wiki/Syntax). I have a string of the form:

            ...

            ANSWER

            Answered 2022-Jan-06 at 20:42

            Your regexp will work except if the quote is at the end of the string, because [^"] won't match there. So use an alternative to match the end there.

            Source https://stackoverflow.com/questions/70613339

            QUESTION

            Extract following word after match word in Kusto
            Asked 2021-Dec-30 at 16:24

            Kusto uses the re2 library: https://github.com/google/re2/wiki/Syntax, as mentioned here: https://docs.microsoft.com/en-us/azure/kusto/query/re2 so apparently lookarounds is not supported.

            Sample String:Some sentence. Some word Some word ServiceInstanceId:78d61d2f-6df9-4ba4-a192-0713d3cd8a82.1234 not found. , ErrorCode:2 Some sentences. Some sentences.Some sentences.

            Is it possible to extract 78d61d2f-6df9-4ba4-a192-0713d3cd8a82 from the above string in Kusto. Need all characters after "ServiceInstanceId:" until next space.

            ...

            ANSWER

            Answered 2021-Dec-30 at 13:57

            QUESTION

            Software Foundations: weak_pumping lemma proof
            Asked 2021-Dec-24 at 17:23

            Continuing my work on Software Foundations, I've reached the weak_pumping lemma. I managed to get through almost everything, but I can't find a solution for MStarApp case.

            Here's the Lemma:

            ...

            ANSWER

            Answered 2021-Oct-11 at 15:11

            Try to destruct s1 and look again on lemma napp_star in one of cases.

            Source https://stackoverflow.com/questions/69515896

            QUESTION

            EC2 GRPC install hangs after 12 hours still no install
            Asked 2021-Dec-01 at 19:04

            I'm pretty sure it's because I am using t2.nano and not something a little more beefy.

            But I have used laravel forge to provision an ec2 server, I can't deploy my application however because I need to install GRPC.

            I have followed these instructions: https://cloud.google.com/php/grpc#using-pecl

            And when I run: sudo pecl install grpc it runs for around 10 mins and then just gets stuck.

            Seems to be running the same thing over and over again, can't quite workout the full stack trace or more importantly where it begins, but I'll post below.

            ...

            ANSWER

            Answered 2021-Dec-01 at 19:04

            Upgrade to a bigger tier than the t2.nano and it should work. I think it's because of the RAM limit. I had the same issue with some instances in Digital Ocean.

            Source https://stackoverflow.com/questions/69988900

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install re2

            You can download it from GitHub.

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