handling-rust-errors

What problem does it solve?

HASH error handling patterns in Rust enable a consistent, testable approach to create, propagate, and document errors across a codebase using the error-stack crate and derive_more.

Core Features & Use Cases

• Define error types with derive_more and implement the Error trait for consistent formatting
• Propagate errors with change_context, attach, and ResultExt across sync and async boundaries
• Document error variants and usage with intra-doc links and examples
• Apply HASH patterns in real projects to improve debuggability and maintainability

Quick Start

Define a small error enum using derive_more and implement the Error trait. In a sample function, wrap an upstream error with change_context and augment it with attach for extra context.