#[macro_use] extern crate helix; ruby! { class Console { def log(string: &str) { println!("LOG: {:?}", string); } } } $ irb >> require "console" >> Console.log("I'm in your Rust") LOG: "I'm in your Rust" BLAZING FAST Helix lets you offload performance-critical code to Rust without leaving your Ruby workflow. class CountWordsController < ApplicationController def index # WordCount is written in Rus