m01-ownership
Rust ownership and lifetime error diagnosis through design-first questioning.
- Covers seven critical error codes (E0382, E0597, E0506, E0507, E0515, E0716, E0106) with root-cause questions rather than quick fixes
- Guides developers to ask "who should own this data?" before applying syntax solutions, distinguishing between symptom fixes and design restructuring
- Provides decision trees for choosing between move semantics, borrowing, cloning, and smart pointers (Arc, Rc, Cow) based on data role and sharing requirements
- Includes escalation paths to related skills (resource management, mutability, domain modeling) when errors persist beyond a third attempt
Ownership & Lifetimes
Layer 1: Language Mechanics
Core Question
Who should own this data, and for how long?
Before fixing ownership errors, understand the data's role:
- Is it shared or exclusive?
- Is it short-lived or long-lived?
- Is it transformed or just read?
Error → Design Question
| Error | Don't Just Say | Ask Instead |
|---|
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