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• bitwise operations on strings with ruby

  - by artsince

  How can I perform bitwise operations on strings in ruby? I would like to do bitwise & a 4-byte string with a 4-byte long hex such as ("abcd" & 0xDA2DFFD3). I cannot get the byte values of the string. Thanks for your help.

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• Ruby Hide Console

  - by Ell

  I am attempting to make a game written in Ruby using the Gosu library (http://www.libgosu.org/) but when I run the game, a console also shows. How do I make sure the console is hidden from the start? thanks in advance, ell

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• Using a lemmatizer in ruby

  - by Shreyas Satish

  I have tried using a stemmer but the words it produces are just not upto the mark. It could be great if you could let me know any lemmatizer script there exists for ruby or a lemmatizer gem or an SQL query that bundles out the lemma of a word in the wordnet database. Cheers !

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• What to ignore in a Mercurial .hgignore for a Ruby on Rails app

  - by Sly

  I created a hello world app with rails HelloWorld command. I ended up with many directories: app config db doc lib log public script test tmp vendor Should all this be under sources control? What would be a good default .hgignore file for a Ruby on Rails app folder?

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• Ruby script as service

  - by mplacona

  Well, the title say it all. I have a ruby script I want running as a service (one I can start and stop) on my Linux box. I was able to find how to do it on Windows here Some readings point to creating daemons or cron tasks. I just need something simple I can call on my box's reboot, and can stop/start whenever I please. my script has an internal sleep call, and runs in "eternal loop" thanks in advance

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• 256 color terminal library for Ruby?

  - by brianegge

  Is there a gem like 'Term::ANSIColor' which works with 256 color terminals? The perl script 256colors2.pl works great in my terminal, and I'd like to use some of these colors in my ruby scripts without manually inserting the ANSI codes.

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• ruby on rails setup on my ubuntu

  - by hiren

  Do I need to set up virtual hosts as mentioned here: http://wiki.rubyonrails.org/deployment/apache-passenger I am just setting up dev env on my own machine to try and learn ruby on rails. thanks in advance.

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• Embedding tcl in ruby

  - by Jordan

  Is there any way to do this? It seems the only possible way to do this is by using ruby/tk and creating a tcl interpreter through that api. However, I'd like to use this on a system with no GUI (x windows). Am I out of options? Thanks

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• Using ruby's OptionParser to parse sub-commands

  - by rampion

  I'd like to be able to use ruby's OptionParser to parse sub-commands of the form COMMAND [GLOBAL FLAGS] [SUB-COMMAND [SUB-COMMAND FLAGS]] like: git branch -a gem list foo I know I could switch to a different option parser library (like Trollop), but I'm interested in learning how to do this from within OptionParser, since I'd like to learn the library better. Any tips?

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• ruby on rails - ultrasphinx

  - by satya

  Ruby on Rails - UltraSphinx Hi guys, I'm using Ultrasphinx for the search thing. My question is : I have the "rake ultrasphinx:daemon:start" running in the background. Now, should I have a cron job that does "rake ultrasphinx:index" regularly or will the daemon take care of indexing whenever a new object is created. Please, let me know. Its kind of emergency. Thanks

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• Ruby SerialPorts

  - by Seth Archer

  I'm using the ruby serial port gem. After I open up the port I send the data I want like this. sp.write [200.chr, 30.chr, 7.chr, 5.chr, 1.chr, 2.chr, 0.chr, 245.chr].to_s It doesn't work, but if I put it in a loop of around 200 times: 200.times do sp.write [200.chr, 30.chr, 7.chr, 5.chr, 1.chr, 2.chr, 0.chr, 245.chr].to_s end It works. Any ideas on why this is happening?

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• XMLRPC with long integer entry in hashMap from java server is not obtained in ruby client

  - by Mahesh M

  I am using XMLRPC to get data from a Java server. I use HashMap as return value for a particular remote call. The server puts a long int into the HashMap (which is returned) along with other data. At the client end, which is ruby, I get all other data but for the long int. How can I get this data at the client?

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• Ruby SOAP::RPC::Driver seeing the generated soap request

  - by ssmithstone

  I'm using ruby's WSDLFactory to create an rpc driver to access the paypoint soap service and i need to see what xml request is being generated is there a way to do this code or should i try and use something like ethereal

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• Ruby on Rails - jrails not site wide

  - by Hamish

  Is it possible to configure jrails so that it only replaces the ruby on rails helper methods for some parts of the site? I am currently in a project where we are doing a staggered migration to jQuery so the site wide choice is not an option in this case.

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• How to know when an instance variable gets set in Ruby

  - by Brian Genisio

  Is there any way to override the setting of instance variables in Ruby? Lets say I set an instance variable: @foo = "bar" Can I intercept that and do something (like record it or puts, for instance)

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• Editor Ruby and RoR on Ubuntu 9.10

  - by Anry

  I'm starting to program in Ruby and Rails. Which editor is best to use? My OS is Ubuntu 9.10.

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• ruby write newline character to file but do not interpret as a true newline

  - by thomas

  I am trying to write a ruby string to a file in such a way that any newline characters embedded in the string remain embedded. This is being written out to a file which will then be processed by another tool. An example is below. I want this: 1 [label="this is a\ntest"] \n (second \n is a true newline) I have tried this: string = '1 [label="this is a\ntest"]' + "\n" Any thoughts?

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• Ruby program with the largest ratio of output length to program length

  - by Horace Loeb

  The program print "hi" contains 10 characters and outputs a string with length 2. Therefore its ratio of output length to program length is 2/10. My question is what Ruby program has the largest output length to program length ratio (For program length let's only count non-whitespace characters (i.e., it's easy to minify a program))

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• Using ASP.NET c# with Sketchup Ruby Extension

  - by Tad Carter

  I'm an ASP.NET c# developer using VS2010 as my development platform. I am interested in accessing Sketchup models using a web form interface. Has anyone done this? I am looking for a simple "Hellow World" web application that uses the Ruby Extension model.

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• Getting output of system() calls in ruby

  - by Macha

  If I call a command using system() in ruby, how do I get it's output? e.g. system("ls")

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• Making Environment Changes Stick in Ruby Scripting

  - by yar

  Here is my script #!/usr/bin/env ruby if __FILE__ == $0 `cd ..` end which runs fine, but when it exits, I'm back where I started. How can I "export" the changes I've made to the environment?

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• Hibernate CRUD à la Ruby on Rails' Scaffolding

  - by schonarth

  Guys, Do you know of any tool that would do like Ruby on Rails' Scaffolding (create simple CRUD pages for any particular class to allow quickly populating a database with dummy data), only which used Java classes with Hibernate for database access, and JSP/JSF for the pages? It is a drag when you are programming one part of an application, but need data that can only be added with another part that is not ready yet, or very cumbersomely by directly inserting it into the DB.

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• Running Java, Python, Ruby and Perl programs in .NET

  - by Arjun Vasudevan

  I've .NET framework 3.5 installed in my laptop. Just .NET alone, no Visual Studio. How can I run Java, Python, Ruby and Perl programs from the console? What are the commands used for running them? Do I need to install something else also, for running these language files?

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• Ruby: opening files relative to home directory

  - by Peter

  In Ruby, the following fails with Errno::ENOENT: No such file or directory, even if the file exists: open('~/some_file') However, you can do this: open(File.expand_path('~/some_file')) Two questions: Why doesn't open process the tilde as pointing to the home directory? Is there a slicker way than using File.expand_path?

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• remainder application in ruby

  - by nani

  i want to send develop a web app in ruby on rails . which wil send the remainder to the mail and mobile tooo . can some body help me out thanks in advance

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