Pure Ruby – Jupyter Notebook

Welcome to Pure Ruby, a collection of episodes exploring the Ruby programming language using the power of interactive Jupyter Notebooks.

Whether you're brushing up on Ruby syntax, exploring object-oriented programming, or experimenting with gems and DSLs, this notebook-driven series is here to help you learn by doing.

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🔧 How to Run Ruby in Jupyter on Ubuntu

To use Ruby inside Jupyter Notebooks, you’ll need the IRuby kernel. Follow these steps:

1. Install Dependencies

sudo apt update
sudo apt install ruby ruby-dev build-essential libzmq3-dev libtool pkg-config

2. Install Jupyter (via pip or conda)

If you're using pip:

pip install notebook

Or with conda:

conda install -c conda-forge notebook

3. Install the IRuby Kernel

gem install iruby
iruby register --force

⚠️ Tip: You might need to install bundler if it’s not present:

gem install bundler

4. Run Jupyter Notebook

jupyter notebook

You should now see a "Ruby" kernel option available when you create a new notebook.

📚 Episodes

Each episode is a focused lesson or theme in Ruby, written in notebook format:

00 - Map, Reduce & Select - Mastering Enumerable Methods

01 - Map, Reduce & Select - Complex Solutions

02 - Ruby Syntax - Review in Jupiter Notebook

03 - Rails 8 + Keycloak Integration: A Beginner’s Guide

04 - Rails 8 + Keycloak Integration v2: Adding Oauth2 Flow

05 - 🔐 Rails JWT Authentication: A Practical Guide

06 - Rails Session & Cookie Playground: Understand and experiment with session and cookie storage in Rails 8

📂 Notebooks for each episode are in the /notebooks folder.

📖 Where to Read

You can follow the episodes on Medium:

🔗 Pure Ruby Series on Medium

Or download and run them locally.

📦 Contributing

Feel free to fork this repository and add new episodes, improve examples, or open issues with suggestions.

📜 License

MIT License. Do as you wish — just keep learning and coding Ruby! user_info = { name: payload["name"], email: payload["email"], preferred_username: payload["preferred_username"], given_name: payload["given_name"], family_name: payload["family_name"] }

user_info.each do |key, value| puts "#{key.to_s.ljust(20)}: #{value || '[not provided]'}" end

This is an accurate explanaition about this middleware implemented by J3. Please be aware of this upgrate. Bye! 👉⬇️