Documentation

Guides and tutorials for learning Geng.

• Getting started

  Install Geng and write your first program.

• Functional programming for imperative programmers

  A walk from C, Go, Python or Rust to pure functional programming in Geng, in five parts.

• Geng's type system

  Custom types, pattern matching, refinement types and builders, for people who know Python, Go, C or C++.

• Geng for Elm and Gren programmers

  What is different in Geng if you already know Elm or Gren.

• Error handling

  How Geng makes errors expected and handled.

• Platforms and targets

  Building one Geng program for JavaScript, the BEAM, native code, WebAssembly and the JVM.

• Interop

  Calling host-platform code from Geng, and Geng from the host.

• FAQ and design rationale

  Why Geng is the way it is.

• Status and roadmap

  What works today, what is planned, and what may change.