Rust Error Handling

Comprehensive guide based on The Rust Programming Language Ch. 9, Effective Rust Item 4, and Rust by Example.

When to Use This Skill

• Choosing between panic!, Result, and Option
• Designing custom error types for a library or application
• Composing multiple error types with ?
• Deciding between thiserror (libraries) and anyhow (applications)
• Converting errors with From/Into
• Wrapping context around errors

Decision Tree