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m02-resource

Select Rust ownership patterns and smart pointers for resource management.

1.4k|110|Updated Jan 17, 2026
Search Tags:#ownership#concurrency#rust#smart-pointers#Arc#Rc
One-click install
npx skills add https://github.com/actionbook/rust-skills --skill m02-resource-actionbook
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: m02-resource
Source: https://github.com/actionbook/rust-skills/tree/main/skills/m02-resource
Command: npx skills add https://github.com/actionbook/rust-skills --skill m02-resource-actionbook

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps Rust developers design and reason about resource management by selecting appropriate ownership patterns and smart pointers to ensure safe, efficient memory handling.

Core Features & Use Cases

  • Guided pointer selection: Box for heap-allocated single ownership, Rc for single-thread shared ownership, Arc for multi-thread shared ownership.
  • Interior mutability handling with RefCell and Cell in appropriate contexts.
  • Cycle prevention with Weak references and lifetime considerations.

Quick Start

Try a small Rust project that demonstrates Box, Rc, and Arc usage alongside RefCell for interior mutability to see ownership in action.

Frequently Asked Questions about m02-resource

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
When should I use Arc vs Rc for shared ownership in Rust?▼

Rust smart pointers each serve distinct allocation and ownership roles. Box provides heap allocation for single ownership, Rc enables single-thread shared ownership, Arc allows multi-thread shared ownership, and RefCell provides runtime interior mutability.

How do I choose the right Rust smart pointer for my ownership pattern?▼

Match the pointer to your thread and mutability needs: Box for heap single ownership, Rc for single-thread sharing, Arc for multi-thread sharing, and RefCell or Cell for interior mutability constraints.

What is the best way to prevent reference cycles in Rust?▼

Use Weak references to prevent reference cycles in Rust. Weak references do not contribute to strong reference counts, allowing memory to be deallocated safely when primary owners go out of scope.

How does interior mutability with RefCell and Cell work in Rust?▼

Interior mutability with RefCell and Cell allows mutating data even when immutable references exist. Cell enables copying types, while RefCell enforces standard borrowing rules at runtime.

Why does my Rust code fail to compile when sharing data across threads?▼

Sharing data across threads likely fails because Rc is not thread-safe. You must use Arc for multi-thread shared ownership to ensure safe concurrent access and satisfy Rust concurrency constraints.

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