design-patterns

Provides guidance on Gang of Four design patterns and their application in software development.

Updated Feb 17, 2026
One-click install
npx skills add https://github.com/Objective-Arts/lens-dist --skill design-patterns-objective-arts
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: design-patterns
Source: https://github.com/Objective-Arts/lens-dist/tree/main/canon/design-patterns
Command: npx skills add https://github.com/Objective-Arts/lens-dist --skill design-patterns-objective-arts

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps developers understand and apply classic Object-Oriented design patterns to create more flexible, maintainable, and reusable software.

Core Features & Use Cases

  • Pattern Reference: Provides definitions, intents, and use cases for the 23 Gang of Four (GoF) design patterns.
  • Pattern Selection Guidance: Offers decision trees and problem-to-pattern mappings to choose the right pattern.
  • Anti-Pattern Awareness: Highlights common misuses of patterns to avoid them.
  • Use Case: When faced with a complex object creation scenario, consult this Skill to determine if a Factory, Builder, or Abstract Factory pattern is most appropriate.

Quick Start

Explain the Factory Method pattern and provide a simple Python example.

Frequently Asked Questions about design-patterns

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

FAQPage Schema
How do I choose the right GoF design pattern for a specific refactoring scenario?

Design patterns provide standardized object-oriented solutions for recurring software architecture challenges. They define intents, structures, and use cases that help developers create flexible, maintainable code designs while facilitating systematic refactoring of complex logic.

What is the difference between Factory, Builder, and Abstract Factory patterns for object creation?

Factory, Builder, and Abstract Factory differ in their object creation intents. This Skill explains these GoF patterns, highlighting that Factory handles single object instantiation, Builder constructs complex step-by-step objects, and Abstract Factory creates families of related objects.

How do I implement the Factory Method pattern with a code example?

Implementing the Factory Method pattern involves defining an interface for object creation while letting subclasses decide which class to instantiate. This Skill provides guidance and simple code examples to demonstrate this object-oriented design pattern.

When should I avoid using design patterns to prevent anti-patterns in code design?

You should avoid design patterns when their unnecessary application creates anti-patterns, adding unjustified complexity to your code design. This Skill highlights common misuses of patterns to ensure your software architecture remains robust and maintainable.

Can I use this Gang of Four reference for object-oriented architecture in any programming language?

The Gang of Four reference describes language-agnostic object-oriented architecture concepts. While it uses Python examples for quick implementation, the structural design patterns apply to any object-oriented programming environment for robust code design.