Ruby is... A dynamic, open source programming language with a focus on simplicity and productivity. It has an elegant syntax that is natural to read and easy to write. Download Ruby …

Ruby is a general-purpose programming language. It was designed with an emphasis on programming productivity and simplicity. In Ruby, everything is an object, including primitive …

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Sep 4, 2025 · Ruby is a popular backend programming language, widely used for building modern applications and services. It makes development faster, easier, and more productive …

Fast, searchable Ruby documentation for core and standard libraries. Plus, links to tutorials, guides, books, and related sites.

See the Installation page for details on building Ruby from source. If you have an issue compiling Ruby, consider using one of the third party tools mentioned above.

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What is a variable? Working with variables. That pesky newline! What is an array? What is a hash?

The Koans walk you along the path to enlightenment in order to learn Ruby. The goal is to learn the Ruby language, syntax, structure, and some common functions and libraries.

Ruby, as a language, has a few different implementations. This page has been discussing the reference implementation, in the community often referred to as MRI (“Matz’s Ruby …