Is every feature of the universe logically necessary? Example: Given the matching we are looking for, both sub and gsub will give you the same answer. Making statements based on opinion; back them up with references or personal experience. For the regex, . and then replaces them with a / i can't test it on powershell but it work in the regex generator. Connect and share knowledge within a single location that is structured and easy to search. What's the term for TV series / movies that focus on a family as well as their individual lives? my Why does removing 'const' on line 12 of this program stop the class from being instantiated? rev2023.1.17.43168. Examples_Split_Trim_Substring_Remove_Left_Right.xaml (30.8 KB) will remove everything before the last slash but how can i remove everything before the second to last one? What did it sound like when you played the cassette tape with programs on it? P.S. MASL Nov 19, 2015 at 17:27 Add a comment 0 For the sake of completeness: You could 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. @benraay do you need help understanding it? 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). How can I do that in R? Is it OK to ask the professor I am applying to for a recommendation letter? @HamidehIraj You can make use of regexes for executing that. You are welcome. Once you get use to regex you'll see that it is as easy to remove from the last @ char. I've edited my answer to include this case as well. For the sake of completeness: You could use the stringr package to extract what you want. And replace it with nothing. How can citizens assist at an aircraft crash site? To learn more, see our tips on writing great answers. How to see the number of layers currently selected in QGIS, Strange fan/light switch wiring - what in the world am I looking at, Avoiding alpha gaming when not alpha gaming gets PCs into trouble. Good answer, but there is only one substitution so. This is the same as the first answer, Anchor to start of pattern, or at the end of the most recent match. Connect and share knowledge within a single location that is structured and easy to search. Much faster. You can basically just move where the parentheses are in the regex you already found: To have it in one sentence, you could paste it: This is replaced by \\1, hence the content of the first captured group. Is it OK to ask the professor I am applying to for a recommendation letter? Why is 51.8 inclination standard for Soyuz? Regex match everything after question mark? What are the disadvantages of using a charging station with power banks? How do you access the matched groups in a JavaScript regular expression? Looking to protect enchantment in Mono Black. Note: I chose to str_extract, you could also choose to str_remove. preg_match('([^/]+$)', ". Find position of last occurrence of a char in a string. But, most likely a faster and simpler solution is to use your Meaning of "starred roof" in "Appointment With Love" by Sulamith Ish-kishor. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. matches any character (except for line terminators) * matches the previous token between zero and unlimited times, as many (i.e.) Joachim Isaksson Jan 9, 2012 at 15:30 Add a comment 4 Solution 2. check @MilenGeorgiev no thanks i was just saying this version of the code is less readable than the one with RegEx they are sometimes hard to understand but, Javascript regular expression: remove first and last slash, Trim only the first and last occurrence of a character in a string (PHP), Microsoft Azure joins Collectives on Stack Overflow. How do I create a Java string from the contents of a file? How to translate the names of the Proto-Indo-European gods and goddesses into Latin? Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Because '\' is the default path separator, we need to replace the '\' with '/' after doing this: Thanks for contributing an answer to Stack Overflow! How do I remove a property from a JavaScript object? 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. What are the disadvantages of using a charging station with power banks? WebAssert that the Regex below does not match . Find a string of (zero or more) characters other than. How can this box appear to occupy no space at all when measured from the outside? One liner, no regex, handles multiple occurences. Are the models of infinitesimal analysis (philosophically) circular? Connect and share knowledge within a single location that is structured and easy to search. see http://regexr.com?2vlr8 for a live example, If your regex implementation support arbitrary length look-behind assertions you could replace, with an empty string. How to translate the names of the Proto-Indo-European gods and goddesses into Latin? Is this variant of Exact Path Length Problem easy or NP Complete. This would give you the pathnames of each parent directory in the list. I need a 'standard array' for a D&D-like homebrew game, but anydice chokes - how to proceed? then substr if exist. If you'd like to remove the '/' you could do like this; you may need to escape the slash in the character class, depending on the language you're using. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. If there are no captured groups or if the value of the last captured group is String.Empty, the $+ substitution has no effect. How to get file name from full path with PHP? rev2023.1.17.43168. Example: rs<-c("copyright I'm new at regular expressions and wonder how to phrase one that collects everything after the last /. 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. 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. Personally, I like Jilbers solution best. I suggest using regex replace to get the string you want: Using JavaScript you can simply achieve this. Are the models of infinitesimal analysis (philosophically) circular? If it does not, you can replace. rev2023.1.17.43168. So the final regex might be: (dd300\/.+?,) The parentheses are only necessary when you need to access the matched string. WebMethod 1: Using Find and Replace to Remove Text after a Specific Character Method 2: Using a Formula to Remove Text after a Specific Character Method 3: Using VBA to Remove Text after a Specific Character Removing Text after the nth Instance of a Specific Character Removing Text after a Specific Character Then, seems like the existing answer solved your question :), Thank you. 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, Regular Expression for getting everything after last slash. will be totally wiped out How did adding new pages to a US passport use to work? I imagine regex could handle it, but I'm terrible with it. based on @Mark Rushakoff's answer the best solution for different cases: Thanks for contributing an answer to Stack Overflow! Connect and share knowledge within a single location that is structured and easy to search. This is most useful Example 1: This example using the approach discussed above. AgainI wonder if this is faster than regex. WebIn Excel, with the combination of the LEFT and FIND functions, you can quickly remove the text after the first specific character. I tried this t.replace("\\","\\\\") it did't work, You only need to do it when you set a string value directly in code, like in the example above. Regular expression to stop at first match. Is this variant of Exact Path Length Problem easy or NP Complete, How to see the number of layers currently selected in QGIS. Some people find this jungle of leaning trees But it's always nice to see someone answer with the simplest change. What does and doesn't count as "mitigating" a time oracle's curse? Find the rightmost '/', and everything past that is what you are looking for. Card trick: guessing the suit if you see the remaining three cards (important is that you can't move or turn the cards). By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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. Is every feature of the universe logically necessary? I figured I'd ask in case anyone knew off hand. ^ = start of the row .*\/ = greedy match to last occurance to / from start of the row (.*) = group of everything that comes after How do I chop/slice/trim off last character in string using Javascript? 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. What does "you better" mean in this context of conversation? Caveat: an input WebI have a dataset say. Thanks for contributing an answer to Unix & Linux Stack Exchange! How do you access the matched groups in a JavaScript regular expression? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Remove the last part $ asdf="xxx/xxxx/xxxxx/yyy" $ echo $ {asdf%/*} xxx/xxxx/xxxxx This is described in man bash: $ {parameter%word} $ {parameter%%word} : http://www.domain.com/clients/. How do you access the matched groups in a JavaScript regular expression? (Basically Dog-people). Once you get use to regex you'll see that it is as easy to remove from the last @ char. 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. @PlatinumAzure - That is on the todo list! This would also match "/", which means your group would be empty, i.e. Use sed to print from the very first line until the line containing the last occurrence of a pattern? P.P.S. 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. Thanks for contributing an answer to Stack Overflow! Making statements based on opinion; back them up with references or personal experience. Make "quantile" classification with an expression. How do I get a file name from a full path with PHP? Why did it take so long for Europeans to adopt the moldboard plow? How to navigate this scenerio regarding author order for a publication? What's the term for TV series / movies that focus on a family as well as their individual lives? Card trick: guessing the suit if you see the remaining three cards (important is that you can't move or turn the cards). I tried, Making statements based on opinion; back them up with references or personal experience. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Not the answer you're looking for? If we wanted to fix that, So effectively it is anything followed by a colon. 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. Just in case that someone needs a premature optimization here http://jsperf.com/remove-leading-and-trailing-slashes/5, you can check with str.startsWith and str.endsWith escaping the slashes that are part of the regular expression Making statements based on opinion; back them up with references or personal experience. This solution doesn't use regexes. My confusion arises mainly due to, 1) Does parens for pattern matching need to be escaped inside sed regex-es? This pattern will not capture the last slash in $0 , and it won't match anything if there's no characters after the last slash. /(?<=\/)([^\/]+)$/ The value after the 4th slash is sometimes a number, but can also be any parameter. to be harder to read and maintain, Examples are for RPA Dev Rookies. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Browse other questions tagged. Should I remove outliers if accuracy and Cross-Validation Score drop after removing them? Print contents of a file only after last occurrence of a token? Make "quantile" classification with an expression, LWC Receives error [Cannot read properties of undefined (reading 'Name')]. Edit: but it requires lookbehind, not supported by ECMAScript (Javascript, Actionscript), Ruby or a few other flavors. An explanation of your regex will be automatically generated as you type. 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: How can I validate an email address using a regular expression? Approach 1: Split the string by .split () method and put it in a variable (array). Smarty strpos and substr to get text after last forward slash in URL, Remove everything after last forward slash in Google Sheets with Regex, Attaching Ethernet interface to an SoC which has no embedded Ethernet circuit. Can I change which outlet on a circuit has the GFCI reset switch? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Making statements based on opinion; back them up with references or personal experience. The generic syntax is: =LEFT (cell,FIND ("char",cell)-1) cell: The cell reference or text string that you want to remove text from. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. How can I validate an email address using a regular expression? How to translate the names of the Proto-Indo-European gods and goddesses into Latin? How to automatically classify a sentence or text based on its context? I would like to remove all characters after the character . Kyber and Dilithium explained to primary school students? How Intuit improves security, latency, and development velocity with a Site Maintenance- Friday, January 20, 2023 02:00 UTC (Thursday Jan 19 9PM Use of ChatGPT is now banned on Super User. How to make chocolate safe for Keidran? (Basically Dog-people). Once you get use to regex you'll see that it is as easy to remove from the last @ char. @angel0smile thank users who answer your question by upvoting (when you're able), and selecting their answer: In R, how to remove everything before the last slash, Microsoft Azure joins Collectives on Stack Overflow. Why is water leaking from this hole under the sink? To learn more, see our tips on writing great answers. What kind of classification should I use? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. How can citizens assist at an aircraft crash site? "Replace all (//g) leading slash (^\/) or (|) trailing slash (\/$) with an empty string.". Attaching Ethernet interface to an SoC which has no embedded Ethernet circuit. Indefinite article before noun starting with "the". Is every feature of the universe logically necessary? I have a dataset like the one below. I have the following regex to remove last slash from a URL: (.*)\/. What does "you better" mean in this context of conversation? This pattern will not capture the last slash in $0, and it won't match anything if there's no characters after the last slash. \". you can also normal string split $str = "http://spreadsheets.google.com/feeds/spreadsheets/p1f3JYcCu_cb0i0JYuCu123"; What did it sound like when you played the cassette tape with programs on it? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, I modified this to remove any number of leading or trailing slashes, by using "+": replace(/^\/+|\/+$/g, ''). 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, Regex to remove everything before second to last forward slash, Microsoft Azure joins Collectives on Stack Overflow. 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. To learn more, see our tips on writing great answers. How Intuit improves security, latency, and development velocity with a Site Maintenance- Friday, January 20, 2023 02:00 UTC (Thursday Jan 19 9PM removing words based on a predefined vector. Something). $url = 'http://spreadsheets.google.com/feeds/spreadsheets/p1 In case someone will wonder: you can use It removes /clients. it is working on https://regex101.com/ for all (PCRE (PHP), ECMAScript, (JavaScript), Python, Golang) but it I don't know if my step-son hates me, is scared of me, or likes me? It removes /clients. lualatex convert --- to custom command automatically? How can I validate an email address using a regular expression? Find centralized, trusted content and collaborate around the technologies you use most. Can a county without an HOA or covenants prevent simple storage of campers or sheds, Can someone help me identify this bicycle? this regex will find "something". this finds /one.txt and replaces it with /. an empty ID. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. The regex is not complicated, but the syntax for removing things using it depends on the language. $path = "http://spreadsheets.google.com/feeds/spreadsheets/p1f3JYc Get all unique values in a JavaScript array (remove duplicates), Attaching Ethernet interface to an SoC which has no embedded Ethernet circuit. Afaik all regex engines work forwards, so would have to check every character. How (un)safe is it to use non-random seed words? Is there a regular expression to detect a valid regular expression? @KyleMit Cant you see? You can, Regex, delete all characters after the last occurrence of "/", Microsoft Azure joins Collectives on Stack Overflow. But this is not removing anything. Can I (an EU citizen) live in the US if I marry a US citizen? Asking for help, clarification, or responding to other answers. Or you could use a combination of strrpos and substr, first find the position of the last occurence and then get the substring from that position up to the end. Would Marx consider salary workers to be members of the proleteriat? How can I remove a specific item from an array? Can I change which outlet on a circuit has the GFCI reset switch? Why does secondary surveillance radar use a different antenna design than primary radar? 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, (1)The question says "delete all characters, @Scott (1) Sure, the only difference between the directory pathname with and without the trailing, @Scott (2) Yes, it is required that literal quotes are escaped in the data. We could use / as the delimiter in this command, apostrophes) in the input, or whether they were escaped, and the answer didn't disclose the constraint. Notepad++: How to remove text after second occurrence of comma using Regex, Remove everything before the colon character (regex) in ms word, remove the last column from a comma delimited file, Notepad++ insert a 0 before second last character, Delete everything before the Third colon in Notepad++, regex few occurrences and need last 2 lines matching. From the array return the element at index = length-1. How could magic slowly be destroying the world? To learn more, see our tips on writing great answers. char: The specific separator that you want to remove text based on. Asking for help, clarification, or responding to other answers. Which implementation language are we talking about? How we determine type of filter with pole(s), zero(s)? It only takes a minute to sign up. This will not remove duplicate slashes at the beginning or end of the string ("//banking/bon/ita//") which a regex like replace(/^\/+|\/+$/g, '') will. "ERROR: column "a" does not exist" when referencing column alias, Is this variant of Exact Path Length Problem easy or NP Complete. regexpowershell. print To learn more, see our tips on writing great answers. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Not the answer you're looking for? If you don't want that consider /([^/]+)$ instead. the first answer matches the entire line and replaces it with nothing, Poisson regression with constraint on the coefficients of two variables be the same. And to embed quotes, escape them as e.g. Sub-stringing the URL would faster and would avoid importing regex support. This means that / is at the end of the input. i.e. The best answers are voted up and rise to the top, Not the answer you're looking for? My point was that the question didn't say whether there were quotes (a.k.a. Basename and dirname are great for moving through anything that looks like a unix filepath. Making statements based on opinion; back them up with references or personal experience. Why is 51.8 inclination standard for Soyuz? If you are using one of those flavors, you can use: But it will capture the last slash in $0. So in this case, the regex is better IMO. This is a requirement by, Of course I know that. Strange fan/light switch wiring - what in the world am I looking at. 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: PS> $indexoflastslash = ("NorthWind.ac.uk/Users/Current/IT/Surname, FirstName").lastindexof ('/') PS> "NorthWind.ac.uk/Users/Current/IT/Surname, FirstName".substring (0,$indexoflastslash) By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 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). and so would not make a substitution. Thanks for contributing an answer to Stack Overflow! Find centralized, trusted content and collaborate around the technologies you use most. That means when you use a pattern matching function with a bare string, its equivalent to wrapping it in a call to regex (): # The regular call: str_extract (fruit, "nana") # Is Wall shelves, hooks, other wall-mounted things, without drilling?
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