# clipperhouse/gen

Type-driven code generation for Go

Repository: https://github.com/clipperhouse/gen
Canonical: https://ross.abutalabs.com/products/clipperhouse-gen
Homepage: http://clipperhouse.com/gen/overview/
Language: Go
License: NOASSERTION
License Family: other
Topics: go, generics, code-generation
Last push: 2023-10-31T21:03:51+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4707, "days_push": 1037, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1424, forks 88 (observed 2026-08-28T04:04:41.278973+00:00)

## What it is
gen is a command-line code generation tool for Go that provides generics-like functionality by generating typed methods (LINQ/underscore-inspired) for annotated types. It is explicitly deprecated and does not work with recent Go versions, since Go now has native generics.

## Use cases
- generate type-safe slice methods for Go types
- add LINQ-like Where, Count, GroupBy to Go collections
- generate Set containers for custom types
- pre-generics Go code needing typed containers
- generate stringer-like methods from type annotations

## When to choose
- maintaining legacy Go codebases predating Go 1.18 generics
- studying historical approaches to generics in Go

## When to avoid
- any modern Go project - use native generics instead
- recent Go versions, where the tool no longer works
- new projects seeking code generation

## Facets
- artifact type: cli-tool
- maturity: abandoned
- function: cli, developer-tools, type-system
- domain: developer-tools, programming-languages
- platform: go, cli, cross-platform
- tags: generics, go-generics, typewriters, deprecated, linq, metaprogramming, code-generation, command-line

## Member repositories
- clipperhouse/gen (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:41.278973+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:37:34.696211+00:00, confidence not recorded.
  - readme: https://github.com/clipperhouse/gen (fetched 2026-08-28T04:04:41.278973+00:00, sha 2f34079d35e5)
  - homepage: http://clipperhouse.com/gen/overview/ (fetched 2026-08-29T11:49:32.794959+00:00, sha c85b15bb45d4)
- Data as of 2026-08-30T08:39:29.467469+00:00.