m06-error-handling

Designing robust Rust error handling involves defining precise error types and clear propagation to prevent unclear failure modes across libraries and applications. You achieve this by targeting specific library boundaries and contextual information layers.

The best way to use thiserror and anyhow for Rust error propagation is applying thiserror for precise library boundary error types and anyhow for application-level contextual propagation. This separation ensures clear, context-aware error hierarchies.

Converting Rust Options to Results avoids unwrap pitfalls by forcing explicit error handling rather than risking panics. You satisfy options-to-results conversions by mapping None cases into defined error types instead of calling unwrap directly.

You should panic vs return an error in Rust based on whether the failure is recoverable; return errors for expected failures across layers and panic for unrecoverable state violations. Clear guidance surfaces friendly messages for recoverable contextual failures.

Yes, this Rust error handling approach works for both libraries and applications by defining precise error types for library boundaries and using contextual propagation for application scenarios. It targets unwrap pitfalls and context-aware hierarchies across layers.