Structural Pattern Selector

Name: Structural Pattern Selector
Author: BookForge

Choose the right structural design pattern (Adapter, Bridge, Composite, Decorator, Facade, Flyweight, or Proxy) for a structural design problem. Use when you need to adapt interfaces between incompatible classes, decouple an abstraction from its implementation so both can vary independently, build part-whole hierarchies where individual objects and compositions are treated uniformly, add responsibilities to objects dynamically without subclassing, simplify access to a complex subsystem, share large numbers of fine-grained objects efficiently, or control and mediate access to another object. Disambiguates commonly confused patterns: Adapter vs Bridge (timing — after design vs before design), Composite vs Decorator vs Proxy (intent — structure vs embellishment vs access control, recursion pattern). Also use when someone asks "should I use Adapter or Bridge?", "what's the difference between Decorator and Proxy?", "when should I use Facade vs Adapter?", or "do I need Flyweight here?"

Install

1. Add marketplace

› /plugin marketplace add bookforge-ai/bookforge-skills

2. Install plugin

› /plugin install design-patterns-gof@bookforge-skills

3. Use the skill

› /structural-pattern-selector

CC-BY-SA · Open sourceGitHub

Source Book

Design Patterns

Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides

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