use rhai::{packages::*, Engine, EvalAltResult, INT};
use std::rc::Rc;
fn main() -> Result<(), Box<EvalAltResult>> {
let mut engine = Engine::new_raw();
engine.load_package(ArithmeticPackage::new().get());
let result = engine.eval::<INT>("40 + 2")?;
println!("Answer: {}", result);
Ok(())
}