|Developer(s)||Yukihiro Matsumoto (among others)|
|Stable release||2.2.3 / August 18, 2015|
|Type||Ruby programming language interpreter|
Simplified BSD License
GNU General Public License (prior to 1.9.3)
Matz's Ruby Interpreter or Ruby MRI (also called CRuby) is the reference implementation of the Ruby programming language named after Ruby creator Yukihiro Matsumoto ("Matz"). Until the specification of the Ruby language in 2011, the MRI implementation was considered the de facto reference, especially since an independent attempt to create the specification (RubySpec) has failed.
The latest stable version is Ruby 2.2.3.
Yukihiro Matsumoto ("Matz") started working on Ruby on February 24, 1993, and released it to the public in 1995. "Ruby" was named as a gemstone because of a joke within Matsumoto's circle of friends alluding to the name of the Perl programming language.
The RubySpec project has independently created a large test suite that captures 1.8.6/1.8.7/1.9 behavior as a reference conformance tool. Ruby MRI 1.9.2 passed over 99% of RubySpec., MRI Ruby 2.2 crashed on one of the tests. As a result of the limited uptake by the MRI developers, RubySpec project has been discontinued as of end of 2014.
Prior to release 1.9.3, the Ruby interpreter and libraries were distributed as dual-licensed free and open source software, under the GNU General Public License or the Ruby License. In release 1.9.3, Ruby's License has been changed from a dual license with GPLv2 to a dual license with the 2-clause BSD license.
Ruby MRI is available for the following operating systems (supported Ruby versions can be different):
This list may not be exhaustive.
Commonly noted limitations include:
- Backward compatibility
- Version 1.9 and 1.8 have slight semantic differences. The release of Ruby 2.0 sought to avoid such a conflict between different versions.
- nagachika (2015-08-18). "Ruby 2.2.3 Released". ruby-lang.org. Retrieved 20 August 2015.
- Brian Shirai (31 Dec 2014). "Matz's Ruby Developers Don't Use RubySpec and It's Hurting Ruby.". Rubinius blog. Retrieved 16 November 2015.
- Bruce Stewart (2001-11-29). "An Interview with the Creator of Ruby". linuxdevcenter.com. O'Reilly. Retrieved 22 February 2014.
- shyouhei (30 Jun 2013). "We retire Ruby 1.8.7". ruby-lang.org. Retrieved 22 February 2014.
- Musha, Akinori (2008-05-26). "Ruby Core: Ruby 1.8.7-preview4 has been released". Retrieved 2008-05-30.
The new version of Ruby includes many bug fixes, lots of feature enhancements and some performance improvements since 1.8.6 while maintaining stability and backward compatibility with the previous release to a high degree, although there are ongoing efforts that need to be done toward adopting RubySpec.
- "1.8.7 NEWS". Retrieved 2008-05-30.
- Yugui (18 Aug 2010). "Ruby 1.9.2 is released". ruby-lang.org. Retrieved 22 February 2014.
- "Ruby License". ruby-lang.org. Retrieved 22 February 2014.
- "Ruby 1.9.3 Release News". ruby-lang.org. Retrieved 22 February 2014.
- Rick DeNatale (Dec 26, 2007). "Ruby 1.9 released". Infoq.com. Retrieved 22 February 2014.
- Yusuke Endoh (24 Feb 2013). "Ruby 2.0.0-p0 is released". ruby-lang.org. Retrieved 22 February 2014.