9 lines
475 B
Markdown
9 lines
475 B
Markdown
# Debugging
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## Macro Debugging
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- Print the final output of a macro using `cargo rustc --profile=check -- -Zunstable-options --pretty=expanded`
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- Alternatively you could install and use [cargo expand](https://github.com/dtolnay/cargo-expand) which adds syntax highlighting to the terminal output.
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- Additionally get pager by piping to `less` ( on Unix systems ): `cargo expand --color always | less -R`
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- Print output during macro compilation using `eprintln!("hi");`
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