languages pattern
Rust Ownership & Memory Safety
Rust's ownership model: ownership, borrowing, lifetimes. The key to memory safety without garbage collection.
Time
Zero-cost abstractions at runtime
Space
No garbage collector, deterministic memory management
🧠Mental Model
“Library books - each book has one borrower at a time, must be returned, and the library tracks everything.”
Verbal cue: One owner, borrow or move, lifetimes track validity.
🎯Recognition Triggers
When you see these patterns in a problem, consider this approach:
Rustownershipborrowingmemory safetysystems programming
💡Interview Tips
- 1Explain WHY ownership prevents bugs (use-after-free, data races)
- 2Know the difference between &T and &mut T
- 3Understand when Rust is the right choice (systems, performance-critical)
⚠️Common Mistakes
- ✕Fighting the borrow checker instead of understanding it
- ✕Overusing clone() to avoid borrowing issues
- ✕Not understanding when to use Box, Rc, Arc