Hello World

By the end of this guide, you will:

• Write your first View callable that renders text to the terminal

• Write your first Update callable that handles keyboard events

• Use pattern matching (case message in type: :key, code:) to check which key was pressed

• Return Command.exit from Update to quit the application

• Understand what Rooibos.run does to start your app

• Understand what a View returns (RatatuiRuby widgets like paragraph)

• Understand what an Update returns (model or command)

• Run your app and see it respond to keyboard input

⚠️ This page is a stub. Help us write it! See the Documentation Plan and Style Guide.

User Stories

Story -3: Hello World + Quit

As a terminal user
I want to launch a minimal TUI application that I can quit
So that I can verify the application runs

Acceptance Criteria

• Application displays “Hello, File Browser!” text

• Application displays “Press ‘q’ to quit” instruction

• Pressing ‘q’ or Ctrl+C exits the application cleanly

Notes

• First runnable TUI application

• Demonstrates basic rendering and quit functionality

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