Quick background: I have a string which contains references to other pages. The pages are linked to using the format: "#12". A hash followed by the ID of the page. Say I have the following string: str = 'This string links to the pages #12 and #125' I already know the IDs of the pages that need linking: page_ids = str.scan(/#(\d*)/)....
How to use gsub with more than 9 backreferences? I would expect the output in the example below to be "e, g, i, j, o". > test <- "abcdefghijklmnop" > gsub("(\\w)(\\w)(\\w)(\\w)(\\w)(\\w)(\\w)(\\w)(\\w)(\\w)(\\w)(\\w)(\\w)(\\w)(\\w)(\\w)", "\\5, \\7, \\9, \\10, \\15", test, perl = TRUE) [1] "e, g, i, a0, a5" ...
I am trying to remove some double quotes (") characters from a text file using a Ruby one liner, with little success. I have tried the following, and some variations, without success. ruby -pe 'gsub(/\"/,"")' < myfile.txt This gives me the following error: -e:1: Invalid argument - < (Errno::EINVAL) I am running Ruby on a Win machi...
Hey there Annoying problem. I am trying to replace all semicolon characters in my Model's description field with newline characters (\n). The database is sqlite. The field is of type text. If I do it manually at the rails console (manually typing the description for a single record using \n for line breaks), the rails console automati...
My Rails app deals a lot with data from third-party APIs (specifically UPS, FedEx, DHL, etc). What I'd like to do is whenever that data comes in, replace certain phrases with customized phrases. Example: "On FedEx vehicle for delivery" (which we get from the FedEx API), I'd like to replace with "Out for Delivery." Is it best to replac...
Hi, I am having some issues using gsub to replace double slashes. The problem is this: I built a small script to parse YAML files for a directory location, and then to use that to glob the files in that directory. Say this is the directory it finds: C:\Program Files\Adobe\Adobe Flash CS3\en\Configuration\ActionScript 3.0\Classes Thi...
Hello I'm trying to create a BBcode [code] tag for my rails forum, and I have a problem with the expression: param_string.gsub!( /\[code\](.*?)\[\/code\]/im, '<pre>\1</pre>' ) How do I get what the regex match returns (the text inbetween the [code][/code] tags), and escape all the html and some other characters in it? I've tried thi...
How can I replace this: lyrics = lyrics.gsub(/\n/,'').gsub(/^\{\"similar\": \[/, '').gsub(/\]\}$/, '').gsub(/^\{/, '').gsub(/\}$/, '') to something shorter and one gsub call? ...
I have a guest list that has a last name in one column and then in another column I have the first names or the full names (first space last) of each person in the family. I am wanting to get the other column to just have the first names. gsub(guest.w$Last.Name,"",guest.w$Party.Name.s.) That would work perfectly if I just had one row...
I don't understand what is going on here. How should I feed gsub to get the string "Yaho\'o"? >> "Yaho'o".gsub("Y", "\\Y") => "\\Yaho'o" >> "Yaho'o".gsub("'", "\\'") => "Yahooo" ...
Hi I'm new to Ruby and regular expressions. I'm trying to use a regular expression to remove any zeros from the month or day in a date formatted like "02/02/1980" => "2/2/1980" def m_d_y strftime('%m/%d/%Y').gsub(/0?(\d{1})\/0?(\d{1})\//, $1 + "/" + $2 + "/" ) end What is wrong with this regular expression? Thanks. ...
params[:hello] # => "Some params value" hello = params[:hello] hello.gsub!("whatever","") params[:hello] # => "" I don't understand, can someone please explain why the params[:hello] gets modified by the gsub! ? I expected the hello string to be modified, but not the params hash. ...
I'm trying to figure out how to replace a quote like ' with something like \'. How would I do this? I have tried "'".gsub("'","\\'") but it just gives an empty string. What am I doing wrong here? ...
ruby 1.8.6 (2007-09-24 patchlevel 111) str = '\&123' puts "abc".gsub("b", str) => ab123c puts "abc".gsub("b", "#{str}") => ab123c puts "abc".gsub("b", str.to_s) => ab123c puts "abc".gsub("b", '\&123') => ab123c puts "abc".gsub("b", "\&123") => a&123c <--- This I want to achieve using temporary variable If I change str = '\&123' to str...
I try to modify "/foo/bar/dir" -> "\/foo\/bar\/dir" before execute it in command line. I test by using gsub in irb the result is x = "/foo/bar/dir" x.gsub("/","\\\/") => "\\\/foo\\\/bar\\\/dir" x.gsub("/","\/") => "/foo/bar/dir" Is it possible to replace "/" with "\/" by gsub ? Source of problems is I try to execute "string i...
I try to replace a sub-str by the content of a valiable where its name matches the sub-str by: >> str = "Hello **name**" => "Hello **name**" >> name = "John" => "John" str.gsub(/\*\*(.*)\*\*/, eval('\1')) # => error! the last line in the code above is a syntax error. and: >> str.gsub(/\*\*(.*)\*\*/, '\1') => "Hello name" >> str.gsub...
I need to re-format a list of UK postcodes and have started with the following to strip whitespace and capitalize: postcode.upcase.gsub(/\s/,'') I now need to change the postcode so the new postcode will be in a format that will match the following regexp: ^([A-PR-UWYZ0-9][A-HK-Y0-9][AEHMNPRTVXY0-9]?[ABEHMNPRVWXY0-9]? {1,2}[0-9][ABD-...
Try the following code: s = '#value#' puts s.gsub('#value#', Regexp.escape('*')) # => '\*' puts s.gsub('#value#', Regexp.escape('+')) # => '' Wtf? It looks like the char '\+' (returned by Regexp.escape) is completely ignored by gsub. How to fix this? ...
Hi guys! I'm trying to create permalink like behavior for some article titles and i don't want to add a new db field for permalink. So i decided to write a helper that will convert my article title from: "O "focoasă" a pornit cruciada, împotriva bărbaţilor zgârciţi" to "o-focoasa-a-pornit-cruciada-impotriva-barbatilor-zgarciti". Wh...
Hello. How would I get last 12 digits of a string using mysql? Let's say I have a varchar field with a tracking number, that may be anywhere from 5 to 20 varchars long. But I only need to select last 12 digits or less if there are less. so in a field = 12345678123456789012 I would only need to get what's in brackets field = 1234567...