What’s this?

gen is a code-generation tool for Go. It’s intended to offer generics-like functionality on your types. Out of the box, it offers offers LINQ/underscore-inspired methods.

It also offers third-party, runtime extensibility via typewriters.

Introduction and docs…

Changelog

Hey, a video

‼️

This project is deprecated. It won't work with recent versions of Go, and...Go now has proper generics! Treat this project as a historical curiosity.

Typewriters

There is a list of open-source typewriters in TYPEWRITERS.md. Please add your own.

Contributing

There are three big parts of gen.

gen

This repository. The gen package is primarily the command-line interface. Most of the work is done by the typewriter package, and individual typewriters.

typewriter

The typewriter package is where most of the parsing, type evaluation and code generation architecture lives.

typewriters

Typewriters are where templates and logic live for generating code. Here’s set, which will make a lovely Set container for your type. Here’s slice, which provides the built-in LINQ-like functionality. Here’s stringer, a fork of Rob Pike’s tool.

Third-party typewriters are added easily by the end user. You publish them as Go packages for import. Learn more...

We’d love to see typewriter packages for things like strongly-typed JSON serialization, Queues, Pools or other containers. Anything “of T” is a candidate for a typewriter.