/tags/ruby/ Recent content in Ruby on Saleem Ansari Hugo -- gohugo.io en (c) 2024 Saleem Ansari Mon, 30 Jun 2014 05:00:48 -0700 /2014/06/30/machine-learning-with-ruby/ Mon, 30 Jun 2014 05:00:48 -0700 /2014/06/30/machine-learning-with-ruby/ This post is about the talk I was supposed to give at Ruby Camp 2014, Delhi/NCR. After all the preparation, slides and code I missed it. Unfortunately, I fell sick overnight and I couldn’t make it. Apologies for that. The best I could do is upload all the material online on GitHub and my website. the code is on GitHub at this repository: tuxdna/rubyml. the generated slides are also online here Thats all! /2012/03/05/a-bug-in-rpm-for-rubygem-sprockets-and-rubygem-tilt/ Mon, 05 Mar 2012 00:00:00 +0000 /2012/03/05/a-bug-in-rpm-for-rubygem-sprockets-and-rubygem-tilt/ I packaged Rails 3.1.0 and its dependencies few days back for Fedora 16. The repository configuration file is as below: [rails3] name=rails3 baseurl=http://tuxdna.fedorapeople.org/packaging/rubygems/f16/ enabled=1 gpgcheck=0 Now when I installed Rails 3.1.0, I got into a in issue: $ sudo yum install rubygem-rails-3.1.0 ...OUTPUT SKIPPED... --> Running transaction check ---> Package rubygem-polyglot.noarch 0:0.3.3-1.fc16 will be installed ---> Package rubygem-sprockets.noarch 0:2.0.3-1.fc16 will be installed --> Processing Dependency: rubygem(tilt) < 1.3.0 for package: rubygem-sprockets-2. /2012/03/04/problems-with-ruby-gem-to-rpm/ Sun, 04 Mar 2012 00:00:00 +0000 /2012/03/04/problems-with-ruby-gem-to-rpm/ I can’t emphasize more the importance of packaging RPMs ( or any other packaging system ), as I already did it in an earlier post. Same arguments apply to Ruby Gems as well. That is to say, Ruby Gems already have a gem command to install and update packages. However it is still not a complete packaging system in itself. Consider the situation where you need to install a gem called A which dependes on B and C. /2012/02/22/ruby-gem-to-rpm-all-in-one-go/ Wed, 22 Feb 2012 00:00:00 +0000 /2012/02/22/ruby-gem-to-rpm-all-in-one-go/ This is my first attempt at building RPM packages for Ruby GEMS. https://gist.github.com/1885411 Requirements: yum install rpmdevtools yum install ruby rubygems rubygem-gem2rpm How to run: $ ruby make_rpms.rb -t ~/tmp/rpm-gem-packaging/ -n mechanize -r 2.2.1 This will download the gem and dependencies and generate SRPM and RPM files in the following folder: ~/tmp/rpm-gem-packaging/rpmbuild/ NOTE: The status of SUCCESS and FAILURE can be seen in the file: ~/tmp/rpm-gem-packaging/rpmbuild/status.txt Check for RPM and SRPM files which were generated: /2012/01/29/jruby-on-rails-with-rvm-on-fedora/ Sun, 29 Jan 2012 00:00:00 +0000 /2012/01/29/jruby-on-rails-with-rvm-on-fedora/ First install RVM and set it up: sudo yum install rubygem-rvm rvm-install To include RVM into your bash shell, add following line to ~/.bashrc: [[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm" # This loads RVM into a shell session. Now install JRuby and use it as default Ruby interpreter: source ~/.bashrc rvm install jruby-1.5.6 rvm use jruby-1.5.6 Setup Rails environment: gem install rails gem install bundler Lets create a new Rails application: /2012/01/14/potential-bug-in-ruby-bindings-of-apache-qpid/ Sat, 14 Jan 2012 00:00:00 +0000 /2012/01/14/potential-bug-in-ruby-bindings-of-apache-qpid/ I wanted to experiment with Ruby bindings of Apache Qpid. Lets install the the server and client: $ sudo yum install qpid-cpp-server ruby-qpid qpid-tools $ service qpidd start Now check which version of Ruby bindings have we installed here: $ rpm -qi ruby-qpid Name : ruby-qpid Version : 0.8 Release : 2.fc15 Architecture: x86_64 Install Date: Fri 13 Jan 2012 06:21:55 PM IST Group : Development/Ruby Size : 219877 License : ASL 2. /2011/11/12/turbocharge-your-emacs-for-ruby-on-rails-with-rinari-and-rails-reloaded/ Sat, 12 Nov 2011 00:00:00 +0000 /2011/11/12/turbocharge-your-emacs-for-ruby-on-rails-with-rinari-and-rails-reloaded/ Rinari is an Emacs minor mode that is aimed towards making Emacs into a top-notch Ruby and Rails development environment. Rails reloaded is the minor mode for editing Ruby On Rails code with Emacs. This minor mode makes your work much easier and user friendly. Lets first install rinari: cd ~/.emacs.d/ git clone git://github.com/eschulte/rinari.git cd rinari git submodule init git submodule update ( Curious about git submodules? Read here http://book.git-scm.com/5_submodules.html ) /2007/09/22/ruby-code-snippets/ Sat, 22 Sep 2007 00:00:00 +0000 /2007/09/22/ruby-code-snippets/ Code: Time.at(Time.local(2007, 10, 5)-Time.now).strftime("%d days %H hours %M minutes and %S seconds") /2007/09/04/finding-duplicate-files-on-your-system/ Tue, 04 Sep 2007 00:00:00 +0000 /2007/09/04/finding-duplicate-files-on-your-system/ I ( and many others ) have a lot media files ( mp3, jpg, avi, etc. ) lying around in the system. I wondered that how shall I get the list of all the duplicate files lying in my computer. Writing a script in Ruby which identifies the duplicate files using the MD5 hash values of the files contents, was no difficult a task. Here is the script. #!/usr/bin/ruby ## This file finds all the duplicate files form a directory given ## at the command line. /2007/09/04/learning-ruby/ Tue, 04 Sep 2007 00:00:00 +0000 /2007/09/04/learning-ruby/ Ruby - The Programming Language Here a few links that are good as a first look while learning Ruby. General: http://blade.nagaokaut.ac.jp/ruby/ruby-talk/index.shtml http://www.ruby-lang.org/ http://www.37signals.com/ http://www.ruby-doc.org http://api.rubyonrails.com/ http://www.ruby-forum.com/ http://www.rubyforums.com/forumdisplay.php?f=1 http://www.sitepoint.com/forums/forumdisplay.php?f=227 http://railsforum.com/ http://www.rubyinside.com/ http://redhanded.hobix.com/ http://www.rubyist.net/~matz/ http://www.planetrubyonrails.com/ :symbols in Ruby http://glu.ttono.us/articles/2005/08/19/understanding-ruby-symbols http://onestepback.org/index.cgi/Tech/Ruby/SymbolsAreNotImmutableStrings.red Writing daemons http://daemons.rubyforge.org/classes/Daemonize.html more to come…