rhai/examples/hello.rs

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Rust
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use rhai::{packages::*, Engine, EvalAltResult, INT};
fn main() -> Result<(), Box<EvalAltResult>> {
let mut engine = Engine::new_raw();
engine.load_package(ArithmeticPackage::new().get());
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let result = engine.eval::<INT>("40 + 2")?;
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println!("Answer: {}", result); // prints 42
Ok(())
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}