Mastering Rust - Second Edition

Linting code with clippy

Linting is a practice that helps maintain the quality of your library and have it adhere to standard coding idioms and practices. The de facto linting tool in the Rust ecosystem is clippy. Clippy provides us with a bunch of lints (about 291 at the time of writing this book) to ensure high quality Rust code. In this section, we'll install clippy and try it out on our libawesome library, add some dummy code to it, and see what suggestions we get from clippy. There are various ways of using clippy on your project, but we will use the cargo clippy subcommand way as that's simple. Clippy can perform analysis on code because it's a compiler plugin and has access to a lot of the compiler's internal APIs.

To use clippy, we ...