Rust Smart Pointers and Interior Mutability

Heap ownership, shared ownership, and runtime-checked borrowing in Rust.

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Rust Smart Pointers and Interior Mutability

Box<T> provides heap ownership, Rc<T> and Arc<T> provide shared ownership, and RefCell<T> or synchronization primitives enable controlled interior mutability. Each has distinct ownership, thread-safety, and runtime-cost trade-offs.