clap

Lesson in the Rust Roadmap · Stage 16: CLI Utilities

Last updated 14 September 2026

What is clap?

clap is Rust's most popular command-line argument parser library. It provides declarative CLI definition with automatic help generation, subcommands, validation, and error handling. Supports both builder pattern and derive macros for easy CLI app development with comprehensive features.

Study this in the interactive course See the whole Rust roadmap

Free resources to learn clap

Official docsclap
ArticleUsing Clap in Rust for command line (CLI) Argument Parsing

clap: common questions

Can I learn clap in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain clap in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this clap tutorial for beginners?

It is lesson 97 of 122 in the free Rust roadmap, in stage 16, CLI Utilities. If you are new to Rust, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.