cc-routine-and-class-design
Skill: cc-routine-and-class-design
STOP - Crisis Invariants (NEVER SKIP)
| Check | Time | Why Non-Negotiable |
|---|---|---|
| LSP Test - "Is 'A is a B' literally true?" | 30 sec | Wrong inheritance creates debugging hell |
| Containment Default - If LSP feels wrong, use containment | 30 sec | Containment is fixable; inheritance requires architecture changes |
| Parameter Count - If >7 parameters, interface is wrong | 15 sec | High parameter count predicts interface errors |
Prerequisites
This skill assumes:
- Object-oriented programming with class-based inheritance
- Mutable state (objects that change over time)
- Synchronous or simple async patterns
For functional programming, prototype-based inheritance, or heavily concurrent code, adapt principles rather than applying literally. See "Pattern-Specific Guidance" section.
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