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golang-structs-interfaces

Guide Go struct and interface design with composition, embedding, and type assertions.

Updated Jun 27, 2026
Search Tags:#interfaces#Go#type system#programming best practices#structs#Go design patterns
One-click install
npx skills add https://github.com/LuigiAPCPereira/evolutiondocs --skill golang-structs-interfaces-luigiapcpereira
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: golang-structs-interfaces
Source: https://github.com/LuigiAPCPereira/evolutiondocs/tree/main/.agents/skills/golang-structs-interfaces
Command: npx skills add https://github.com/LuigiAPCPereira/evolutiondocs --skill golang-structs-interfaces-luigiapcpereira

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill unit addresses common challenges in Go programming, particularly around struct and interface design, helping developers write cleaner, more maintainable code.

Core Features & Use Cases

  • Struct and Interface Design Principles: Offers guidelines on keeping interfaces small, defining interfaces where they're consumed, and accepting interfaces while returning structs.
  • Zero Value Utilization: Teaches how to design structs with useful zero values and avoid nil-related bugs.
  • Type Safety: Discusses the importance of using generics over any for type-safe operations, and proper use of type assertions and type switches.
  • Embedding and Dependency Injection: Provides insights into struct embedding, interface segregation, and dependency injection via interfaces.
  • Field Tags and Receiver Types: Explains the use of struct field tags for serialization control and the difference between pointer and value receivers.
  • Preventing Struct Copies: Introduces the noCopy sentinel to prevent accidental copying of structs.
  • Common Mistakes: Highlights common pitfalls in Go programming and how to avoid them.
  • Use Case: Ideal for developers looking to improve their Go code quality, especially those working on complex systems that require robust type handling.

Quick Start

Use the golang-structs-interfaces skill to learn about struct and interface design patterns in Go.

Frequently Asked Questions about golang-structs-interfaces

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

FAQPage Schema
What is the best way to design Go structs and interfaces for maintainability?▼

Designing Go structs and interfaces for maintainability involves keeping interfaces small, defining them where they are consumed, and accepting interfaces while returning structs to ensure robust type handling.

How do I choose between pointer and value receivers in Go?▼

Choosing between pointer and value receivers in Go depends on whether you need to mutate the receiver's state or avoid copying large structs, with pointer receivers generally preferred for modifying struct data.

How do I prevent nil-related bugs when utilizing Go struct zero values?▼

To prevent nil-related bugs with Go struct zero values, design your structs so their zero values are immediately useful and safe, avoiding unnecessary initialization steps and pointer nil checks.

When should I use type assertions and type switches over generics in Go?▼

Use type assertions and type switches in Go for dynamic type checking, but prefer generics over the `any` type when you need type-safe operations to enforce compile-time type safety.

How do I prevent accidental copying of structs in Go?▼

To prevent accidental copying of structs in Go, implement the `noCopy` sentinel pattern, which acts as a safeguard to ensure structs containing locks or non-copyable fields are handled correctly by reference.

How does interface segregation improve dependency injection in Go?▼

Interface segregation improves dependency injection in Go by breaking down large interfaces into smaller, specific ones, allowing functions to depend only on the exact methods they need for execution.

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