Some additional ones I have seen:
- In a CLI program, intermingling I/O, argument parsing, etc. with actual domain logic. Domain logic should have its own module or even crate for clean re-usability.
- Again, w.r.t. CLI, parsing arguments manually, or even trying to configure
clapmanually, instead of usingstructoptto create a strongly-typed input/config struct. - Thinking of error handling as an "afterthought" or as some additional annoyance instead of designing with
Resultand?-bubbling upfront. - Overusing slice indexing when iterators would be cleaner/faster, or the converse, overusing iterators where indexing would be easier on borrowck.