You should read that page, but some other diagnostics for R code include the following.
- Check for missing, unmatched, partially matched, and too many arguments to functions.
- Warn if a variable is not defined.
- Warn if a variable is defined but not used.
- Check that the code style conforms to the tidyverse style guide.
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