replace

问题 Consider "artikelnr" . I want to replace "nr" by "nummer" , but when I consider "inrichting" , I do NOT want to replace "nr" . So I just want to replace "nr" by "nummer" if it's at the end of a word. 回答1: regex is your friend, here: sub('nr$', 'nummer', 'artikelnr') # [1] "artikelnummer" The $ indicates "end of string", so nr will only be replaced with nummer when it appears at the end of the string. sub can operate on an entire vector, e.g. for a character vector x , do: sub('nr$', 'nummer',

问题 Let say I have a MySQL table which contains three columns: id , a and b and the column named id is an AUTO INCREMENT field. If I pass a query like the following to MySQL, it will works fine: REPLACE INTO `table` (`id`, `a`, `b`) VALUES (1, 'A', 'B') But if I skip the field id it will no longer works, which is expected. I want to know if there is a way to ignore some fields in the REPLACE query. So the above query could be something like this: REPLACE INTO `table` (`a`, `b`) VALUES ('A', 'B')

问题 I have a cell array like this: [... 0 129 8...2...3...4 6...4 0 I just want to find and replace specific values, but I can't use the ordinary function because the cells are different lengths. I need to replace many specific values at the same time and there is no general function about how values are replaced. However, sometimes several input values should be replaced by the same output. so I want to say for values 1:129 'if 0, then 9' 'elseif 1 then 50' 'elseif 2 or 3 or 4 then 61' etc...up

问题 Is there a way to have PowerShell find and replace a string (for example ~}}|{{E ) with a carriage return and line feed ( \r\nE )? For example: $filenames = @("E:\blergfest.csv") foreach ($file in $filenames) { $outfile = "$file" + ".out" Get-Content $file | Foreach-object { $_ -replace '\~}}|{{E', '\r\nE' ` -replace '\|\r\n', '\r\n' } | Set-Content $outfile } powershell control-characters share | improve this question 回答1: How about this: $filenames = @("E:\blergfest.csv") foreach ($file in

问题 How to replace \n from a line using sed command? 回答1: It's gross, because sed normally processes a line at a time: sed -e :a -e N -e 's/\n/ /' -e ta input.txt This is nicer: tr '\n' ' ' < input.txt I chose to replace the newline with a space. tr can only replace by a single character (or delete with the -d option). Flexible and simple: perl -ne 'chomp;print $_," "' input.txt Where " " is whatever you want in place of the newline. 来源： https://stackoverflow.com/questions/1442702/replacing

问题 For instance I have a string like this : abc123[*]xyz[#]098[~]f9e [*] , [#] and [~] represents 3 different non-printable characters. How can I replace them with "X" in Java ? Frank 回答1: I'm not sure if I understand your questions. If you can formulate it better, I think a simple regular expression replacement may be all that you need. String r = s.replaceAll(REGEX, "X"); REGEX depends on what you need: "\\*|#|~" : matches only '*', "#', and '~' "[^\\d\\w]" : matches anything that is neither a

问题 I've searched for hours looking for the answer to this question which seems frustratingly simple... I have a bash script which I've simplified to find the line that's stopping it from working and am left with: #!/bin/bash # sed -i -e "s/<link>/\n/g" /usb/lenny/rss/tmp/rss.tmp If I run this script, nothing happens to the file rss.tmp - but if I call this exact same sed command from the terminal, it makes all the replacements as expected. Anyone have any idea what I'm doing wrong here? 回答1:

问题 I have more 3000 files in a folder. I want to find and replace text with another one. How can I do that? I'm a newbie in batch script. I can replace it in 1 file but I don't know how to replace in multiple files. FOR /F %%L IN (lala.txt) DO ( SET "line=%%L" SETLOCAL ENABLEDELAYEDEXPANSION set "x=!line:E:\Test=E:\Test\Temp!" echo f | xcopy /E !line! !x! ENDLOCAL ) How can I edit my code to replace the string in all files? Waiting for your help. Thanks 回答1: Install the Find And Replace Text

问题 I'm converting our MVC3 project to use T4MVC. And I would like to replace java-script includes to work with T4MVC as well. So I need to replace "~/Scripts/DataTables/TableTools/TableTools.min.js" "~/Scripts/jquery-ui-1.8.24.min.js" Into Scripts.DataTables.TableTools.TableTools_min_js Scripts.jquery_ui_1_8_24_min_js I'm using Notepad++ as a regexp tool at the moment, and it is using POSIX regexps. I can find script name and replace it with these regexps: Find: \("~/Scripts/(.*)"\) Replace with

问题 I want to make a new string by replacing digits with %d for example: Name.replace( "_u1_v1" , "_u%d_v%d") ...but the number 1 can be any digit for example "_u2_v2.tx" Can I give replace() a wildcard to expect any digit? Like "_u"%d"_v"%d".tx" Or do I have to make a regular expression? 回答1: Using regular expressions: >>> import re >>> s = "_u1_v1" >>> print re.sub('\d', '%d', s) _u%d_v%d \d matches any number 0-9. re.sub replaces the number(s) with %d 回答2: You cannot; str.replace() works with