Appeared in 1995
Designed by Yukihiro Matsumoto
Developer Yukihiro Matsumoto (among others)
Latest release 1.9.0/ 26 December 2007; 381 days ago
Typing discipline dynamic ("duck")
Major implementations Ruby MRI, JRuby
Influenced by Smalltalk, Perl, Lisp, Scheme, Python, CLU, Eiffel, Ada, Dylan
Influenced Groovy, Nu
License Ruby License
GNU General Public License
Ruby is a dynamic, reflective, general purpose object-oriented programming language that combines syntax inspired by Perl with Smalltalk-like features. Ruby originated in Japan during the mid-1990s and was initially developed and designed by Yukihiro "Matz" Matsumoto. It is based on Perl, Smalltalk, Eiffel, Ada, and Lisp
Ruby supports multiple programming paradigms, including functional, object oriented, imperative and reflection. It also has a dynamic type system and automatic memory management; it is therefore similar in varying respects to Python, Perl, Lisp, Dylan, and CLU.
The standard 1.8.6 (stable) implementation is written in C, as a single-pass interpreted language. There is currently no specification of the Ruby language, so the original implementation is considered to be the de facto reference. As of 2008, there are a number of complete or upcoming alternative implementations of the Ruby language, including YARV, JRuby, Rubinius, IronRuby, and MacRuby, each of which takes a different approach, with JRuby and IronRuby providing just-in-time compilation functionality. The official 1.9 (development) branch uses YARV, and so will 2.0, and will eventually supersede the slower Ruby MRI.