golang-samber-mo

Compose Option, Result, and Either monads in Go pipelines.

Updated Aug 23, 2026
One-click install
npx skills add https://github.com/nrmnqdds/gomaluum --skill golang-samber-mo-nrmnqdds
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: golang-samber-mo
Source: https://github.com/nrmnqdds/gomaluum/tree/main/.agents/skills/golang-samber-mo
Command: npx skills add https://github.com/nrmnqdds/gomaluum --skill golang-samber-mo-nrmnqdds

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

samber/mo provides a set of monadic types for Go (Option, Result, Either) to encode absence, failure, and multiple alternatives in a type-safe way, enabling safer data handling and composable pipelines.

Core Features & Use Cases

  • Option[T] enables explicit nullable values, preventing nil-pointer panics through typed absence and safe transforms.
  • Result[T] captures success/failure as a value and supports short-circuiting through Map/FlatMap, Do notation, and TupleToResult for Go-style errors.
  • Either[L,R] models two valid alternatives (e.g., cache vs fresh data) without implying success or failure, with pattern matching via Match or dedicated helpers.
  • When to use sub-packages for type-changing transforms, pipeline helpers, and advanced types (Future, IO, State) to build end-to-end data-processing workflows.
  • Practical patterns include wrapping stdlib calls with TupleToResult, converting Result to Either for API boundaries, and composing pipelines with option/result/either pipes.

Quick Start

Import the samber/mo library and run a simple example that wraps a nullable value with Option and chains a couple of transformations.

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 nullable values in Go without causing nil-pointer panics?

Use the Option[T] monadic type to explicitly model absence in Go, ensuring typed nulls and safe transformations that prevent nil-pointer panics. This functional approach replaces unsafe nil checks with composable, type-safe data handling.

How do I compose Go pipelines that short-circuit on errors?

Compose error-short-circuiting Go pipelines using the Result[T] monad with Map and FlatMap operations. You can also use Do notation and TupleToResult to wrap standard Go-style errors into a composable data-processing workflow.

What is the best way to model two valid alternatives in Go, like cache versus fresh data?

Model two valid alternatives in Go using the Either[L,R] monadic type, which represents two valid states without implying success or failure. You can handle cache versus fresh data scenarios using pattern matching via the Match helper.

Does Go support functional programming patterns for safer error handling?

Go supports functional programming patterns for safer error handling through monadic abstractions like Option, Result, and Either. These types encode absence and operation outcomes, enabling composable pipelines and safer data handling.

When should I use sub-packages for type-changing transforms in Go pipelines?

Use sub-packages for type-changing transforms in Go pipelines when building end-to-end data-processing workflows. They provide advanced types like Future, IO, and State, along with dedicated option, result, and either pipe helpers.

How do I convert Go standard library functions returning errors into a Result type?

Convert Go standard library functions returning errors into a Result type using the TupleToResult pattern. This allows you to wrap standard Go-style errors and successful values into a composable monadic pipeline for short-circuiting.