Rust Error Handling

What problem does it solve?

Rust-specific error handling patterns, building on the base error handling skill. Demonstrates the 'extends' composition feature. Provides guidance on defining library and application errors, propagating failures with Result, and maintaining ergonomic error flows.

Core Features & Use Cases

• Demonstrates composing skills via extends to reuse error handling strategies.
• Shows using thiserror for defining error types and anyhow for context.
• Covers best practices for Result<T, E>, the ? operator, and avoiding unwraps in production code.
• Use Case: Apply this skill to ensure consistent error handling across a Rust project or crate.

Quick Start

Install Rust toolchain if not present, then apply this skill to a Rust project by adding thiserror and anyhow, defining an error type, and refactoring functions to return Result with proper context.