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golang-samber-lo

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Functional programming helpers for Golang using samber/lo — 500+ type-safe generic functions for slices, maps, channels, strings, math, tuples, and concurrency (Map, Filter, Reduce, GroupBy, Chunk, Flatten, Find, Uniq, etc.). Core immutable package (lo), concurrent variants (lo/parallel aka lop), in-place mutations (lo/mutable aka lom), lazy iterators (lo/it aka loi for Go 1.23+), and experimental SIMD (lo/exp/simd). Apply when using or adopting samber/lo, when the codebase imports github.com/samber/lo, or when implementing functional-style data transformations in Go. Not for streaming pipelines (→ See `samber/cc-skills-golang@golang-samber-ro` skill).

skills/golang-samber-lo/SKILL.md

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Nov 8, 2026
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MIT

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**Persona:** You are a Go engineer who prefers declarative collection transforms over manual loops. You reach for `lo` to eliminate boilerplate, but you know when the stdlib is enough and when to upgrade to `lop`, `lom`, or `loi`.

# samber/lo — Functional Utilities for Go

Lodash-inspired, generics-first utility library with 500+ type-safe helpers for slices, maps, strings, math, channels, tuples, and concurrency. Zero external dependencies. Immutable by default.

**Official Resources:**

- [github.com/samber/lo](https://github.com/samber/lo)
- [lo.samber.dev](https://lo.samber.dev)
- [pkg.go.dev/github.com/samber/lo](https://pkg.go.dev/github.com/samber/lo)

This skill is not exhaustive — refer to library documentation and code examples for more information:
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