rust-mutability
Mutability Types
| Type | Controller | Thread-Safe | Use Case |
|---|---|---|---|
&mut T |
External caller | Yes | Standard mutable borrow |
Cell<T> |
Interior | No | Copy types with interior mutability |
RefCell<T> |
Interior | No | Non-Copy types with interior mutability |
Mutex<T> |
Interior | Yes | Multi-threaded interior mutability |
RwLock<T> |
Interior | Yes | Multi-threaded read-write lock |
Solution Patterns
Pattern 1: External Mutability
// Standard mutable borrow
fn increment(counter: &mut u32) {
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