Rust CLI Design with clap: Flags, Config, Help Text, and Exit Codes

A practical two-hour session on Rust CLI Design with clap, focused on Flags, Config, Help Text, and Exit Codes. Rust is used as the implementation context while the core lesson stays on software engineering fundamentals, reliability, testing, and operational clarity.

Audience: entry-level and intermediate developers who want a practical engineering session, not a language tour.

Outcomes:

• Explain the practical boundaries of Rust CLI Design with clap
• Apply Flags in a small working example
• Apply Config in a small working example
• Apply Help Text in a small working example

Format: two hours with a short framing walkthrough, a concrete example, discussion of tradeoffs, and a closing checklist for practice.