How we determine type of filter with pole(s), zero(s)? Is every feature of the universe logically necessary? I'm working in PHP with friendly URL paths in the form of: I need to standardize these URL paths to remove anything after the 4 slash including the slash itself. Regular expression for alphanumeric and underscores, Regular expression to match a line that doesn't contain a word. to match any number of trailing slashes, both / and \. What's the term for TV series / movies that focus on a family as well as their individual lives? How to see the number of layers currently selected in QGIS, Can a county without an HOA or covenants prevent simple storage of campers or sheds. How dry does a rock/metal vocal have to be during recording? How can I validate an email address using a regular expression? How to get file name from full path with PHP? Find centralized, trusted content and collaborate around the technologies you use most. I have a dataset like the one below. Since this is regularly proving useful for others, here's a snippet example As stated in @Archer's answer, you need to double up on the backslashes. Any thoughts on how I could do this? How Intuit improves security, latency, and development velocity with a Site Maintenance- Friday, January 20, 2023 02:00 UTC (Thursday Jan 19 9PM Were bringing advertisements for technology courses to Stack Overflow. I've edited my answer to include this case as well. \". Is this variant of Exact Path Length Problem easy or NP Complete. The following example identifies duplicate words in a string and uses the $+ substitution to replace them with a single occurrence of the word. How to automatically classify a sentence or text based on its context? the first answer matches the entire line and replaces it with nothing, how to remove unwanted characters from data. Connect and share knowledge within a single location that is structured and easy to search. It only takes a minute to sign up. Find centralized, trusted content and collaborate around the technologies you use most. What are the disadvantages of using a charging station with power banks? What regex can extract the "Something" from that string? Toggle some bits and get an actual square. Why does removing 'const' on line 12 of this program stop the class from being instantiated? Use sed to print from the very first line until the line containing the last occurrence of a pattern? When was the term directory replaced by folder? it is working on https://regex101.com/ for all (PCRE (PHP), ECMAScript, (JavaScript), Python, Golang) but it The best answers are voted up and rise to the top, Not the answer you're looking for? Is the rarity of dental sounds explained by babies not immediately having teeth? Is every feature of the universe logically necessary? 3 Answers. Example instead of using "C:\\Mypath\\MyFile" use @"C:\MyPath\MyFile" Just be sure to put the @ symbol before the opening quotes. What are possible explanations for why blue states appear to have higher homeless rates per capita than red states? Regular expression for alphanumeric and underscores, Regular expression to match a line that doesn't contain a word. Reading some post in stackoverflow I found that php has trim function and I could use his javascript translation (http://phpjs.org/functions/trim:566) but I would prefer a "simple" regular expression. Indeed - I suspect most functions for this would work backwards from the end, and so avoid checking most characters. I believe this approach is probably easier to understand, after all regexes - in general - are hard to read: NorthWind.ac.uk/Users/Current/IT/Surname, FirstName has a path-like structure (windows Is the rarity of dental sounds explained by babies not immediately having teeth? I have the following regex to remove last slash from a URL: If applied the regex to the example, it does the work fine, but the problem is when the URL does not have the last slash (it occur from time to time). How can citizens assist at an aircraft crash site? This may not be very useful for URIs, but may be useful for paths, in case your code needs to check/remove trailing slashes both on Windows and *NIX. The JSON file and images are fetched from buysellads.com or buysellads.net. What is the best regular expression to check if a string is a valid URL? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Find a string of (zero or more) characters other than. To learn more, see our tips on writing great answers. EDIT: If what you want is to remove everything from the last @ on you just have to follow this previous example with the appropriate regex. Christian Science Monitor: a socially acceptable source among conservative Christians? Make "quantile" classification with an expression. my Can I change which outlet on a circuit has the GFCI reset switch? Wall shelves, hooks, other wall-mounted things, without drilling? Toggle some bits and get an actual square, Card trick: guessing the suit if you see the remaining three cards (important is that you can't move or turn the cards), Two parallel diagonal lines on a Schengen passport stamp, An adverb which means "doing without understanding", Books in which disembodied brains in blue fluid try to enslave humanity, How to pass duration to lilypond function, "ERROR: column "a" does not exist" when referencing column alias, How to make chocolate safe for Keidran? apostrophes) in the input, or whether they were escaped, and the answer didn't disclose the constraint. What does "use strict" do in JavaScript, and what is the reasoning behind it? Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company. Another great idea! It only takes a minute to sign up. Why did it take so long for Europeans to adopt the moldboard plow? Could you observe air-drag on an ISS spacewalk? Are you sure you want to delete this regex? Is this variant of Exact Path Length Problem easy or NP Complete, How to see the number of layers currently selected in QGIS. Asking for help, clarification, or responding to other answers. You need to do that within the string itself. How to translate the names of the Proto-Indo-European gods and goddesses into Latin? Not the answer you're looking for? Wall shelves, hooks, other wall-mounted things, without drilling? Use the .length property to get the length of the array. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. This is most useful How to navigate this scenerio regarding author order for a publication? Asking for help, clarification, or responding to other answers. This means that / is at the end of the input. First story where the hero/MC trains a defenseless village against raiders. I need a 'standard array' for a D&D-like homebrew game, but anydice chokes - how to proceed? WebAssert that the Regex below does not match . Find centralized, trusted content and collaborate around the technologies you use most. Data Science Stack Exchange is a question and answer site for Data science professionals, Machine Learning specialists, and those interested in learning more about the field. I'm extracting an ID used by Google's GData. How do I get the filename without the extension from a path in Python? To learn more, see our tips on writing great answers. Why did it take so long for Europeans to adopt the moldboard plow? How do I remove a property from a JavaScript object? We could use / as the delimiter in this command, LWC Receives error [Cannot read properties of undefined (reading 'Name')]. *\/ = greedy match to last occurance to / from start of the row, (. Thanks for contributing an answer to Stack Overflow! Making statements based on opinion; back them up with references or personal experience. and then replaces them with a / Find position of last occurrence of a char in a string. I don't know r language, but here is a PCRE regex that works for you (at least at regex101), it matches the second last item in the path (i.e. rev2023.1.17.43168. In Javascript: You can see it working here Regex101 and end match here Regex101. How to pass duration to lilypond function. @G5W This answer follows the principle of "change as little of the OPs implementation as possible to get the desired behavior". lualatex convert --- to custom command automatically? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Your regex has been permanently saved and may be accessed with this link by anybody you give it to. Did Richard Feynman say that anyone who claims to understand quantum physics is lying or crazy? Making statements based on opinion; back them up with references or personal experience. @Martijn I understand completely. No parens because it doesn't need any groups - result goes into group 0 (the match itself). Asking for help, clarification, or responding to other answers. How Intuit improves security, latency, and development velocity with a Site Maintenance- Friday, January 20, 2023 02:00 UTC (Thursday Jan 19 9PM Were bringing advertisements for technology courses to Stack Overflow, what is the best way of removing start and end slashes in a string -if exist- and keep the middle ones using TypeScript/JavaScript. Hello, with CharIndex you can get the position of slash, with SubString the part from position on The information is fetched using a JSONP request, which contains the ad text and a link to the ad image. Is it after a specific character, or after a specific index? Fields on a chess board can be identified as A1-A8 for the first column, B1-B8 for the second column and so on until H1-H8 for the last column. No regex used. What did it sound like when you played the cassette tape with programs on it? But this is not removing anything. Also, you need to double up \ chars in strings as they are used for escaping special characters. : http://www.domain.com/clients/. Toggle some bits and get an actual square. rev2023.1.17.43168. I don't know if my step-son hates me, is scared of me, or likes me? Update Since this is regularly proving useful for others, here's a snippet Wall shelves, hooks, other wall-mounted things, without drilling? Linux is a registered trademark of Linus Torvalds. Connect and share knowledge within a single location that is structured and easy to search. Connect and share knowledge within a single location that is structured and easy to search. (in effect, leaving the final / in the input line alone). Make "quantile" classification with an expression. How do you access the matched groups in a JavaScript regular expression? This matches at least one of (anything not a slash) followed by end of the string: [^/]+$ I don't know if my step-son hates me, is scared of me, or likes me? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. How do I iterate over the words of a string? x <- c ('test/test/my', 'et/tom/cat', 'set/eat/is', 'sk / handsome') I'd like to remove everything before (including) the last slash, the result should look like. Regex to extract last item after TAB in line? rev2023.1.17.43168. Get all unique values in a JavaScript array (remove duplicates), Attaching Ethernet interface to an SoC which has no embedded Ethernet circuit. To learn more, see our tips on writing great answers. Some languages have a syntax literal for regular expressions (like Perls. How can I change this code, so that the other part of the string after the last slash can be shown? so the desired output for the above is: Caveat: an input line that contains no / characters Detailed match information will be displayed here automatically. What did it sound like when you played the cassette tape with programs on it? This would give you the pathnames of each parent directory in the list. Find centralized, trusted content and collaborate around the technologies you use most. How can I update NodeJS and NPM to their latest versions? If you're getting it from somewhere else (the URL, for example) then don't worry about it :). How (un)safe is it to use non-random seed words? How to translate the names of the Proto-Indo-European gods and goddesses into Latin? The generic syntax is: =LEFT (cell,FIND ("char",cell)-1) cell: The cell reference or text string that you want to remove text from. If for example the dd300 is always follwed by two slash separated numbers it can be (dd300\/\d+\/\d+,) Solution 1. or 'runway threshold bar? 31,633. How did adding new pages to a US passport use to work? It removes /clients. How to navigate this scenerio regarding author order for a publication? Browse other questions tagged. Once you get use to regex you'll see that it is as easy to remove from the last @ char. Avoiding alpha gaming when not alpha gaming gets PCs into trouble. How could magic slowly be destroying the world? Making statements based on opinion; back them up with references or personal experience. (Basically Dog-people). IMHO it makes code easier to read by using the @"\" instead of the "\\". Is every feature of the universe logically necessary? Why is sending so few tanks Ukraine considered significant? Making statements based on opinion; back them up with references or personal experience. Would Marx consider salary workers to be members of the proleteriat? Why did it take so long for Europeans to adopt the moldboard plow? How to translate the names of the Proto-Indo-European gods and goddesses into Latin? Another +1 for non-regex solution. by preceding them with backslashes (\). Sed syntax to extract all of text BEFORE last delimiter? I imagine regex could handle it, but I'm terrible with it. Thanks! I'm looking for everything up to the last - and capturing everything that has a - in it. How to tell if my LLC's registered agent has resigned? How to tell if my LLC's registered agent has resigned? If we wanted to fix that, Two parallel diagonal lines on a Schengen passport stamp. To learn more, see our tips on writing great answers. How to see the number of layers currently selected in QGIS. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. and I would like to remove the first and last slash if it's exists. Good answer, but there is only one substitution so. Connect and share knowledge within a single location that is structured and easy to search. WebI have a dataset say. How can I validate an email address using a regular expression? Is it OK to ask the professor I am applying to for a recommendation letter? Asking for help, clarification, or responding to other answers. But, most likely a faster and simpler solution is to use your language's built-in string list processing functionality - i.e. ListLast ( Text , '/' ) or equivalent function. For PHP, the closest function is strrchr which works like this: This includes the slash in the results - as per Teddy's comment below, you can remove the slash with substr: Do peer-reviewers ignore details in complicated mathematical computations and theorems? Did Richard Feynman say that anyone who claims to understand quantum physics is lying or crazy? delete from nth occurrence to end of file, How to replace last occurrence of pattern in a third last line of a file, how to to delete all separators after the last string, How to remove last n characters of a particular column, Print only the lines that with all digits except the last one or the last two characters or the first or second characters, Delete last characters of strings in a txt file, regex and sed in delete all characters before two delimiter. "ERROR: column "a" does not exist" when referencing column alias. Thanks for the awesome help, I know have a much better understanding of regex. A PHP example for the second one can be found at ideone.com. Personally, I like Jilbers solution best. Can I change which outlet on a circuit has the GFCI reset switch? Are the models of infinitesimal analysis (philosophically) circular? Then they added string interpolation with a, Thank You, still can't find how to double the backslashes. For the sake of completeness: You could use the stringr package to extract what you want. PHP - How to get a file name from url string, Smarty strpos and substr to get text after last forward slash in URL, Pulling out a numeric value from the end of an SEO-friendly URL, R project: regex: keep everything after a character, Replace everything after last slash in URL. I'm new at regular expressions and wonder how to phrase one that collects everything after the last /. What kind of classification should I use? regex delete character before slash javascript remove string before last slash javascript remove slash + line break + js strip slashes in javascript javascript remove slash javascript remove everything after last slash trim slashes from end of string js how to remove forward slash from string using javascript You are welcome. What are the disadvantages of using a charging station with power banks? Afaik all regex engines work forwards, so would have to check every character. Making statements based on opinion; back them up with references or personal experience. You can also get the "filename", or the last part, with the basename function. Microsoft Azure joins Collectives on Stack Overflow. regexpowershell. I have the following regex to remove last slash from a URL: (.*)\/. How to translate the names of the Proto-Indo-European gods and goddesses into Latin? Why did it take so long for Europeans to adopt the moldboard plow? Also, you need to double up \ chars in strings as they are used for escaping special characters. Here's a solution that doesn't require regular expressions: Here's another solution that doesn't require regular expressions: Take a substring of your string starting at the beginning of the string and ending before the index of the last slash in your string: This solution doesn't use regexes. How to automatically classify a sentence or text based on its context? matches any character, * repeats this any number of times (including zero) and : matches a colon. How do you access the matched groups in a JavaScript regular expression? Thanks for contributing an answer to Stack Overflow! Connect and share knowledge within a single location that is structured and easy to search. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Why is water leaking from this hole under the sink? Meaning of "starred roof" in "Appointment With Love" by Sulamith Ish-kishor. Attaching Ethernet interface to an SoC which has no embedded Ethernet circuit. Why is 51.8 inclination standard for Soyuz? Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. There's no real reason to use a regex here, string functions will work fine: In case if using RegExp is not an option, or you have to handle corner cases while working with URLs (such as double/triple slashes or empty lines without complex replacements), or utilizing additional processing, here's a less obvious, but more functional-style solution: In this snippet filter() function can implement more complex logic than just filtering empty strings (which is default behavior). I believe this approach is probably easier to understand, after all regexes - in general - are hard to read: NorthWind.ac.uk/Users/Current/IT/Surname, FirstName has a path-like structure (windows also supports the forward slash as a path separator), so we could use split-path to return the parent 'directory' path. I also thought a combination of strpos and substr might be able to handle it, but cannot quite figure it out. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. ^ = start of the row .*\/ = greedy match to last occurance to / from start of the row (.*) = group of everything that comes after I don't know if my step-son hates me, is scared of me, or likes me? Can state or city police officers enforce the FCC regulations? @Sardine: You could try to benchmark it yourself and find out :-) I would consider it highly probable that this is faster than regex. I suggest using regex replace to get the string you want: Using JavaScript you can simply achieve this. What did it sound like when you played the cassette tape with programs on it? This would also match "/", which means your group would be empty, i.e. Not the answer you're looking for? except it matches the last / and all the characters after it, Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Did Richard Feynman say that anyone who claims to understand quantum physics is lying or crazy? then substr if exist. ', Card trick: guessing the suit if you see the remaining three cards (important is that you can't move or turn the cards). Christian Science Monitor: a socially acceptable source among conservative Christians? and What if I want to do it for the last in the text. This is the same as the first answer, By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. A dot is the correct directory to find a file whose path is specified with no path component. Something). First story where the hero/MC trains a defenseless village against raiders, Removing unreal/gift co-authors previously added because of academic bullying. Making statements based on opinion; back them up with references or personal experience.
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