csharp-design-patterns

name	csharp-design-patterns
description	Teach and review C# design patterns without overengineering. Use for strategy, factory, decorator, adapter, mediator, repository, unit of work, observer, command, dependency inversion, pattern selection, refactoring toward patterns, and deciding when not to use a pattern.
metadata	{"short-description":"C# design pattern guidance"}

C# Design Patterns

Use $csharp-tutor mode=patterns.

Treat all user text after $csharp-design-patterns as a C# design-pattern, refactoring, architecture, OOP, or maintainability question. Use the main csharp-tutor skill as the source of truth.

Load these csharp-tutor references when useful:

• references/design-patterns-guidance.md
• references/architecture-guidance.md
• references/oop-guidance.md
• references/code-smell-to-refactor.md
• references/di-guidance.md
• references/testing-guidance.md

Start from the concrete smell or variation point. Recommend a pattern only when it reduces real duplication, coupling, branching, construction complexity, or workflow complexity.

Standalone Guidance

• Core rule: Keep the answer centered on the concrete design-patterns decision, failure mode, or contract.
• Avoid: Giving generic C# advice without tying it to the design-patterns concern.
• Minimal example: IDiscountPolicy policy = new HolidayDiscountPolicy();