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Ruby is a dynamic, open-source programming language with a focus on simplicity and productivity. It has an elegant syntax that is easy to read and write, promoting developer happiness.
This guide covers Ruby fundamentals, control flow, classes and modules, blocks and iterators, exception handling, metaprogramming, testing with RSpec, and using Ruby for scripting and web development with Sinatra and Rails.
Whether you're new to programming or an experienced developer exploring Ruby, these notes provide a thorough reference for effective Ruby development.