Question 1

How to start a new CLI app with TTY?

Accepted Answer

Use the teletype executable: run 'teletype new app-name' to generate a project structure, then add commands with 'teletype add command-name'. This sets up Thor-based parsing and includes helper methods for TTY components in the command.rb file.

Question 2

TTY vs GLI for Ruby CLI development?

Accepted Answer

TTY excels in modularity and terminal UI components, offering built-in features for interactive prompts and progress bars. GLI is simpler for command parsing and subcommands, but lacks TTY's rich terminal rendering. Choose TTY for visually rich CLIs.

Question 3

How to add a progress bar in TTY?

Accepted Answer

Require the tty-progressbar gem and use TTY::ProgressBar.new to create a bar. You can advance it with bar.advance or bar.update, and it supports custom formats and multi-bar layouts for complex tasks.

Question 4

Can I use TTY-prompt alone without the full toolkit?

Accepted Answer

Yes, tty-prompt is a standalone gem. Install it via 'gem install tty-prompt' and use TTY::Prompt.new in your Ruby code for interactive input, without needing the scaffolding or other components.

Question 5

TTY table formatting options?

Accepted Answer

tty-table supports borders, alignment, padding, and multi-line cells. Use TTY::Table.new with data arrays, then render with :basic, :ascii, or :unicode styles. You can customize headers and widths via options.

Question 6

How to handle errors in TTY commands?

Accepted Answer

TTY provides tty-command for running external commands with error capture and logging. In your command logic, use standard Ruby exception handling or define custom error classes in the scaffolding, as shown in the CLI.rb file.

TTY

What is TTY?

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