When should I use Box instead of a regular value?

Use Box when you need heap allocation, have large data structures that shouldn't live on the stack, or are defining recursive types where the size is unknown at compile time.

How do I prevent memory leaks when using smart pointers?

To prevent leaks, use Weak pointers to break reference cycles. If two objects hold strong references to each other (via Rc or Arc), they will never be dropped; making one reference Weak solves this.

What is the difference between Rc and Arc in Rust?

Rc (Reference Counted) is for shared ownership in single-threaded scenarios. Arc (Atomic Reference Counted) is the thread-safe version used for sharing ownership across multiple threads.

What is interior mutability and when do I use it?

Interior mutability allows you to mutate data even when you have an immutable reference to it. Use Cell for simple Copy types or RefCell for more complex types when you need runtime-checked borrowing.

Rust Resource & Smart Pointer Guide

Name: Rust Resource & Smart Pointer Guide
Author: lywa1998

bylywa1998

开发者工具

Optimizes Rust memory management and smart pointer selection to ensure efficient resource handling and thread safety.

关于

This skill provides a structured framework for navigating Rust's complex ownership and resource management systems. It guides developers through the selection process for various smart pointers like Box, Rc, and Arc, helps resolve reference cycles with Weak pointers, and implements interior mutability patterns using RefCell or Cell. By applying a decision-tree approach to memory allocation and concurrency, it ensures that Claude assists in writing performant, leak-free, and thread-safe Rust code while avoiding common pitfalls like runtime panics and unnecessary atomic overhead.

主要功能

Memory allocation decision trees for Stack vs. Heap usage
Smart pointer selection framework for Box, Rc, and Arc
Anti-pattern identification for efficient RAII and resource cleanup
Reference cycle detection and resolution using Weak pointers
0 GitHub stars
Interior mutability guidance for single and multi-threaded contexts

使用场景

Implementing recursive data structures using Box or shared ownership
Refactoring code to fix memory leaks caused by reference cycles
Choosing between Rc and Arc for shared data across thread boundaries

关于

主要功能

Memory allocation decision trees for Stack vs. Heap usage
Smart pointer selection framework for Box, Rc, and Arc
Anti-pattern identification for efficient RAII and resource cleanup
Reference cycle detection and resolution using Weak pointers
0 GitHub stars
Interior mutability guidance for single and multi-threaded contexts

使用场景

Implementing recursive data structures using Box or shared ownership
Refactoring code to fix memory leaks caused by reference cycles
Choosing between Rc and Arc for shared data across thread boundaries