Smart-Pointers

Master Rust’s shared ownership and runtime checks. Use Rc/Arc for multiple owners, RefCell for interior mutability, and Mutex/RwLock for thread-safe state. Includes a DAG example and a clear look at Box::leak, plus when to prefer static checks vs dynamic checks.

Build smart pointers from scratch in C++ - learn templates, move semantics, reference counting, and RAII patterns for memory management.