Generating and viewing documentation

To generate documentation, we can use the cargo doc command in our project directory. It generates docs in the target/doc/ directory with a bunch of HTML files and predefined stylesheets. By default, it generates docs for a crate's dependencies too. We can tell Cargo to ignore generating docs for dependencies by running cargo doc --no-deps.

To view the documentation, one can spawn a HTTP server by navigating inside the target/doc directory. Python's simple HTTP server can come in handy here. However, there's a better way to do this! Passing the --open option to cargo doc will open the documentation page directly in your default browser.