SKILL.md
C++ Domain Errors
Core Question
Who catches this?
- Exception: Inherit
std::runtime_error. - System Error:
std::error_code(OS codes).
Thinking Prompt
- Is it a Domain Event?
- InsufficientFunds is an exception type.
- Does it have context?
- "File not found" needs "Which file?". - struct FileError : std::runtime_error { std::filesystem::path p; ... }
Quick Reference
| Pattern | Use Case |
|---|---|
std::runtime_error |
Base for most failures. |
std::logic_error |
Bug (violation of precondition). |
std::expected |
Visible failure path. |