1234567890 allows you to write Ruby script by using only numbers.
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6x6-reversi oracle is a "perfect" player for reversi using 6x6 board
A Small C Compiler
_ allows you to write Ruby script by using only _.
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A chat bot to publicly run Ruby in slack
A Quine that works with all release versions of CRuby, from Ruby 0.49 to Ruby 3.2.1
Esoteric programming language where all you've got is a deck of cards
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Arbitrary-precision decimal floating-point number library for Ruby
Manage your Ruby application's gem dependencies
Scala-like case classes for Ruby
Continuous Integration tool, mainly for Ruby
concov helps you comprehend continuous changes of coverage.
Modern concurrency tools including agents, futures, promises, thread pools, supervisors, and more. Inspired by Erlang, Clojure, Scala, Go, Java, JavaScript, and classic concurrency patterns.
material for Cookpad's Hackarade #4
Helper methods for the Coverage library
The Python programming language