Ruby 2.0.0 is the latest stable version of Ruby, with major increases in speed and reliability. With this major update from Ruby 1.9.3 in Fedora 18 to Ruby 2.0. in Fedora 19, alongside JRuby, Fedora becomes the superior Ruby development platform.
- Name: Vít Ondruch
- Email: firstname.lastname@example.org
- Targeted release: Fedora 19
- Last updated: 2012-12-18
- Percentage of completion: 10%
Ruby 2.0.0 is upstream's new major release of Ruby. It caries new features such as:
- Keyword arguments
- #to_h: Convention for conversion to Hash
- %i: a literal for symbol array
- regexp engine was changed to Onigmo
- DTrace support
Yet, it is source level backward compatible with Ruby 1.9.3, so you will continue to work.
The updated Ruby also provides better integration with Fedora, especially JRuby. But not only JRuyb, it is also one step closer to be prepared for other interpreters, such as Rubinius. Providing of custom Ruby loader with working name "multiruby"  will allow to easily switch interpreters executing your script, provides fallback to whatever Ruby interpreter is available on you system, yet still keeps backward compatibility with all your Ruby scripts.
Benefit to Fedora
How To Test
- The Ruby 2.0.0 breaks ABI compatibility with previous version of Ruby, therefore soname was bumped. All RubyGems which use binary extensions should be rebuilt. All applications which use Ruby binding should be rebuilt. Nevertheless, since upstream payed great attention to source compatibility, no changes to your code are needed.
- RubyGems with binary extensions now use different directory structure, to provide better compatibility with JRuby and other interpreters. All libraries need to be adjusted to this change. This change is reflected in new packaging guidelines draft.
Comments and Discussion
- See Talk:Features/Ruby 2.0.0 or Ruby-SIG mailing list.