SwiftUI for the terminal. macOS, Linux, over SSH.
For the hands-on: build a real app step by step. Every step is a complete program with a preview of what it draws — type along, run it, break it, fix it.
Build a task list → 📖The full API reference and the architecture articles: the attribute graph, the layout model, the performance history.
API reference → ⬇︎The finished tutorial app as a runnable Swift package —
download, swift run, and poke at it locally.