golang-samber-mo

Apply samber/mo Option, Result, and Either monads to Go code.

2|Updated Feb 12, 2024
One-click install
npx skills add https://github.com/adibfirman/dotfiles --skill golang-samber-mo-adibfirman
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: golang-samber-mo
Source: https://github.com/adibfirman/dotfiles/tree/main/claude/.claude/skills/technical/golang/golang-samber-mo
Command: npx skills add https://github.com/adibfirman/dotfiles --skill golang-samber-mo-adibfirman

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps you avoid fragile nil checks and repetitive error-handling by using samber/mo monadic types so your Go code becomes safer and easier to compose.

Core Features & Use Cases

  • Option[T] for absence without nil: represent nullable values (including pointer and DB nullable fields) without risking nil pointer panics.
  • Result[T] for error-as-a-value: model success/failure and chain computations without manual if err != nil at every step.
  • Either[L, R] for two valid alternatives: return cached-vs-fresh (or other non-error alternatives) in a type-safe way.
  • Do notation for imperative style: use mo.Do to write straight-line code with MustGet while safely converting panics into Result errors.
  • Pipeline sub-packages for type-changing transforms: use option/result/either sub-packages and PipeN/PipeN functions when chaining requires changing types across steps.

Quick Start

Use the golang-samber-mo skill when you are designing Go domain logic with nullable inputs, composable transformations, and error propagation using samber/mo Option, Result, or Either.

Frequently Asked Questions about golang-samber-mo

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

FAQPage Schema
How do I handle nil values and errors in Go without repetitive if err != nil checks?

Use monadic types like Option and Result to model nullable values and error-as-a-value semantics, removing unsafe nil handling and repetitive error checks in Go code. This allows you to safely chain computations without manual checks at every step.

What is the best way to represent nullable database fields safely in Go?

Use Option[T] to represent nullable values and database nullable fields without risking nil pointer panics. It provides a type-safe way to handle absence, ensuring your Go application logic remains safe and composable.

Can I chain type-changing transformations in Go using functional pipelines?

Yes, you can use option, result, and either sub-packages with PipeN functions for type-changing transforms. These pipeline functions satisfy type-safe composition and functional transformations when chaining requires changing types across steps.

Does this monadic approach work with Go 1.18 generics?

Yes, the monadic types and pipeline functions require Go 1.18+ to satisfy type-safe composition. They apply Option, Result, and Either semantics to nullable value modeling and fallible pipelines across application logic and API boundaries.

How do I return two valid non-error alternatives in a type-safe way in Go?

Use Either[L, R] to return two valid alternatives like cached-versus-fresh data in a type-safe way. It models alternative result flows without forcing one side into an error state, keeping your Go API boundaries clean.

When should I avoid using monads for error handling in Go?

Avoid monads when your logic requires simple, single-step operations without chaining or type changes. Monadic types are designed for composable transformations and fallible pipelines, so straightforward scripts may not benefit from the added abstraction.