go-methods

Name: go-methods
Availability: InStock
Author: gofhir

Explain Go method receiver choices for value versus pointer types.

2|Updated Feb 14, 2025

Search Tags:#api design #methods #golang #go #type design #receivers

Ready to run

npx skills add https://github.com/gofhir/validator --skill go-methods

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: go-methods
Source: https://github.com/gofhir/validator/tree/main/.claude/skills/go-methods
Command: npx skills add https://github.com/gofhir/validator --skill go-methods

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill clarifies the nuances of defining methods in Go, specifically guiding users on when to employ value receivers versus pointer receivers for optimal type design and API creation.

Core Features & Use Cases

Method Definition: Learn how to attach methods to custom types.
Receiver Choice: Understand the trade-offs between value and pointer receivers.
API Design: Implement fluent interfaces and method chaining effectively.
Use Case: When designing a new data structure in Go, use this Skill to determine the most appropriate receiver type for its associated methods, ensuring efficient and correct behavior.

Quick Start

Use the go-methods skill to understand when to use a pointer receiver versus a value receiver in Go.

Frequently Asked Questions about go-methods

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

FAQPage Schema

When should I use a pointer receiver instead of a value receiver in Go?▼

Use a pointer receiver in Go when your method needs to mutate the receiver's state, or when handling large types to avoid copying overhead on every method call.

How do I implement method chaining for a fluent API in Go?▼

To implement method chaining for a fluent API in Go, define methods that return the receiver instance itself, allowing sequential calls. Pointer receivers are typically required to ensure modifications persist across the chain.

What is the difference between value and pointer receivers for Go type design?▼

Value receivers operate on a copy of the type, ensuring safety against unintended mutations, while pointer receivers operate on the original instance, allowing state modification and avoiding memory duplication for large Go types.

Does Go handle concurrent access differently based on method receiver types?▼

Go does not inherently secure concurrent access based on receiver types, but choosing value receivers can provide isolation by copying data. Pointer receivers require explicit synchronization mechanisms to prevent data races during concurrent method execution.

How do I attach methods to custom types in Golang?▼

Attach methods to custom types in Golang by declaring a function with a special receiver argument that specifies the type. You must choose between a value receiver and a pointer receiver to determine how the method accesses the type.