m13-domain-error

What problem does it solve?

Domain errors in C++ can become opaque without clear structure. This guide helps you design exception hierarchies, integrate std::error_code for system errors, and adopt explicit failure paths like std::expected where appropriate.

Core Features & Use Cases

• Structured exception hierarchies based on std::runtime_error derivatives for domain errors.
• Integration of system errors via std::error_code to represent OS or library failures.
• Guidance on using optional/expected patterns to model recoverable errors and to provide context.
• Real-world use: library APIs that report precise error categories and actionable messages.

Quick Start

Implement a FileError struct derived from std::runtime_error and propagate an associated std::error_code to distinguish domain failures from system errors.