13eholder/m13-domain-error
m13-domain-error/SKILL.md
Mastering C++ Domain Errors: Exception Hierarchies, System Errors, and Expected.
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Last scanned: Mar 24, 2026, 5:03 PM44.0s2 files scanned
SKILL.md
- name:
- m13-domain-error
- description:
- Mastering C++ Domain Errors: Exception Hierarchies, System Errors, and Expected.
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?
InsufficientFundsis 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. |
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