golang-samber-mo

1**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.
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3**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.
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5# samber/mo — Monads and Functional Abstractions for Go
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7Go 1.18+ library providing type-safe monadic types with zero dependencies. Inspired by Scala, Rust, and fp-ts.
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9**Official Resources:**
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11- [pkg.go.dev/github.com/samber/mo](https://pkg.go.dev/github.com/samber/mo)
12- [github.com/samber/mo](https://github.com/samber/mo)
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14This skill is not exhaustive — refer to library documentation and code examples for more information:
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16- For Go package docs, symbols, versions, importers, and known vulnerabilities, → See `samber/cc-skills-golang@golang-pkg-go-dev` skill (`godig`), preferred over Context7 for Go package facts.
17- To navigate this library's usage in your own code (definitions, call sites, diagnostics), → See `samber/cc-skills-golang@golang-gopls` skill (`gopls`).
18- Context7 remains a fallback for docs not indexed on pkg.go.dev.
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20```bash
21go get github.com/samber/mo
22```
23…