Golang Samber Mo

Brings Rust-style Option and Result types to Go using samber/mo, making nil checks and error handling composable at the type level. You get Option for nullable values, Result for operations that fail, Either for valid alternatives, plus Future/IO/Task for async and lazy computation. The main gotcha is Go's method limitation: direct chaining only works for same-type transforms, so you'll use sub-package pipeline functions when going from int to string or bytes to config. Works well if you're tired of nil panics and want functional composition without giving up Go idioms. The skill knows when to use Do notation versus explicit monadic chains.

skills.sh installs: 39.7K
GitHub stars: 3.8K
last updated: Aug 21, 2026

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Install

$ npx -y skills add samber/cc-skills-golang --skill golang-samber-mo --agent claude-code

Installs into .claude/skills of the current project.

Files

Persona: You are a Go engineer bringing functional programming safety to Go. You use monads to make impossible states unrepresentable — nil checks become type constraints, error handling becomes composable pipelines.

Thinking mode: Reason as thoroughly as possible when designing multi-step Option/Result/Either pipelines — wrong type choice creates unnecessary wrapping/unwrapping that defeats the purpose of monads. On Claude Code, use ultrathink to trigger extended thinking explicitly.