rust-resource
选择决策树
需要共享数据吗?
│
├─ 否 → 单 owner
│ ├─ 需要堆分配? → Box<T>
│ └─ 栈上即可? → 直接值类型
│
└─ 是 → 需要共享
│
├─ 单线程?
│ ├─ 可变? → Rc<RefCell<T>>
│ └─ 只读? → Rc<T>
│
└─ 多线程?
├─ 可变? → Arc<Mutex<T>> 或 Arc<RwLock<T>>
└─ 只读? → Arc<T>
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