Roc

Roc is a direct descendant of the Elm programming language.

basic-cli - a Roc platform to work with files, commands, HTTP, TCP, command line arguments, etc.
basic-webserver - a basic Web Server for Roc.

Building an application

Make a file named main.roc and put this in it:

app "hello"
    packages { pf: "https://github.com/roc-lang/basic-cli/releases/download/0.2.0/8tCohJeXMBUnjo_zdMq0jSaqdYoCWJkWazBd4wa8cQU.tar.br" }
    imports [pf.Stdout]
    provides [main] to pf

main =
    Stdout.line "I'm a Roc application!"

Try running this with roc dev

Tags: language functional wasm native

Last modified 16 November 2025

Roc

A fast, friendly, functional language.

Building an application