Rust Error Handling - Best Practices

Here are some best practices for error handling in Rust programming that I've found effective:

For tests and examples, use "box dyn error" instead of "anyhow."
Prefer the "?" pattern over "unwrap" or "expect," even in tests and examples, to align with production coding standards.
"Box dyn error" is excellent for error passthrough, as are `map_err` and `ok_or` with static strings and formatted strings.
In production code, use an enum with fully descriptive variant names and favor struct variants with clear names over tuple variants.
Avoid relying on the display to convey the meaning of error variants.
In web or device applications, human error rendering might not occur at the enum/type level, so using Debug for display may suffice.
For web or device applications, using Serialize for errors that need to be logged or sent to the client for display can be a powerful and straightforward pattern.
Prioritize clarity in error naming (variants) and focus on consistency as the code develops.
Don't be afraid of medium-length enum variant names; remember, type refactoring is straightforward.
In summary, start with progressive and clear practices, and become more structured as the code matures.


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== Other

Other popular Rust Programming videos:

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Rust Courses:    • Rust Course 2021 by the book | RustLang  
Rust for Java Developers:    • Rust for Java Developers  


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Other notes:

ScreenBrush for the green lines. (Gromit seems to be the equivalent on Linux)
Sketchapp for some graphics.
Davinci Resolve and Fusion video editing.
VSCode with Google Material icon themes (with some customization)