golang-structs-interfaces

What problem does it solve?

Designing Go types can be challenging when balancing small interfaces, embedding decisions, and clear contracts. This Skill provides guidance on when to use interfaces, how to compose types, and how to apply DI patterns for testable code.

Core Features & Use Cases

• Principles for minimal interfaces (1-3 methods) and define them where consumed.
• Strategies for embedding vs named fields, and pointer vs value receivers.
• Dependency injection via interfaces and compile-time interface checks.
• Use with common patterns like type assertions and type switches to keep code safe and expressive.

Quick Start

Describe a minimal Go example with a consumer interface, a struct that depends on it, and a concrete implementation.