m12-lifecycle

Design resource lifecycles using RAII, Drop, lazy initialization, and pooling patterns.

Updated Feb 8, 2026
One-click install
npx skills add https://github.com/yumazak/kodo --skill m12-lifecycle-yumazak
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: m12-lifecycle
Source: https://github.com/yumazak/kodo/tree/main/.agents/skills/m12-lifecycle
Command: npx skills add https://github.com/yumazak/kodo --skill m12-lifecycle-yumazak

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill provides a structured approach to designing and enforcing safe resource lifecycles, combining patterns like RAII, Drop, lazy initialization, and pooling to ensure resources are created, used, and cleaned up responsibly.

Core Features & Use Cases

  • RAII-driven cleanup patterns
  • Lazy initialization for deferred creation
  • Resource pools for expensive resources
  • Guard and scope patterns for transactional boundaries
  • Documentation and decision criteria

Quick Start

Define the scope of your resource and apply the appropriate lifecycle pattern (RAII, lazy init, pool, guard, or scope) to guarantee automatic cleanup.

Frequently Asked Questions about m12-lifecycle

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

FAQPage Schema
How do I manage resource lifecycles safely in Rust?

You can manage resource lifecycles by combining RAII, the Drop trait, lazy initialization, and pooling patterns to handle creation, usage, and automatic cleanup for resources like database connections and file handles.

When should I use RAII versus lazy initialization for resource cleanup?

Use RAII for deterministic, scope-bound cleanup and lazy initialization via OnceLock or Lazy to defer expensive resource creation until first access, with guidance available for choosing the right pattern.

How do I implement a guard pattern for transactional resource boundaries?

Implement the guard pattern by using ownership semantics to define transactional boundaries, ensuring resources are safely acquired and automatically cleaned up when the guard goes out of scope.

Can I use resource pooling for expensive network sessions?

Yes, resource pooling applies to expensive resources like network sessions and database connections, supporting function-local, request-scoped, or application-wide lifecycles to manage them efficiently.

What is the best way to guarantee automatic cleanup of file handles?

The best way to guarantee automatic cleanup is defining the resource scope and applying RAII-driven patterns with the Drop trait, ensuring file handles are released responsibly without manual intervention.