Ruby
Ruby is a dynamic, open-source, object-oriented programming language created by Yukihiro "Matz" Matsumoto, designed to prioritize programmer happiness and readability through elegant, expressive syntax.
Definition
Ruby is a dynamic, open-source, object-oriented programming language created by Yukihiro "Matz" Matsumoto, designed to prioritize programmer happiness and readability through elegant, expressive syntax.
Overview
Ruby was first released in Japan in 1995. Matsumoto blended ideas from Perl, Smalltalk, Lisp, and Eiffel to create a language that felt natural to write, guided by what he called "the principle of least surprise" — code should behave the way a reasonable developer expects it to. Everything in Ruby is an object, including primitives like integers, and the language supports dynamic typing, duck typing, mixins via modules, and blocks, procs, and lambdas for concise, functional-style code. Its metaprogramming capabilities let code modify classes and methods at runtime, which is part of what makes frameworks built on Ruby feel so expressive. It runs on the reference MRI/CRuby interpreter as well as alternative implementations like JRuby on the JVM. Ruby's popularity surged globally after Ruby on Rails launched in 2004, showing how expressive syntax combined with "convention over configuration" could dramatically speed up web development compared to the era's dominant frameworks — a philosophy comparable in spirit to how Python and Node.js later lowered the barrier to building web backends in their own ecosystems.
Key Features
- Pure object-oriented design where everything, including primitives, is an object
- Dynamic typing with flexible duck typing
- Blocks, procs, and lambdas enabling concise functional-style code
- Powerful metaprogramming for DSLs and runtime class modification
- Mixins via modules for flexible code reuse without strict inheritance chains
- Mature package ecosystem via RubyGems and Bundler