Scala Tutorials

scalatutorials.com: interactive, bite-sized Scala tutorials that run in the browser. The tour pairs each lesson with a live editor powered by Scastie, and targets Scala 3.

Running locally

./dev.sh

That's it. The script:

1. downloads the Tailwind CSS standalone CLI to .bin/ on first run (no Node/npm needed),
2. installs the Jekyll gems via Bundler (github-pages, matching what GitHub Pages runs),
3. starts Tailwind in watch mode and jekyll serve --livereload on http://localhost:4000.

One-shot production build: ./dev.sh build. If assets/css/site.css changed, commit it: GitHub Pages doesn't run Tailwind, so the built stylesheet lives in the repo.

Prerequisite: Ruby with Bundler (rvm, rbenv, or Homebrew Ruby all work).

How it's put together

• Plain Jekyll (built automatically by GitHub Pages from master), no theme framework.
• _data/tour.yml is the single source of truth for tour ordering: the Contents dialog, /tour/ page, and prev/next links all derive from it. To add a lesson, drop a markdown file in tour/ (front matter: layout: tour, title, code, optional links) and add one line to _data/tour.yml.
• The editor pane renders the lesson's code as a plain <pre>, which Scastie's embedded.js upgrades to a live editor (worksheet mode, Scala 3). If Scastie is down, the code is still readable.

Contributing

Fork, edit, and send a pull request. For tutorial content, keep snippets runnable in Scastie worksheet mode and valid Scala 3.