rhai/examples/simple_fn.rs
2020-03-09 16:54:43 +08:00

18 lines
336 B
Rust

use rhai::{Engine, EvalAltResult, RegisterFn};
fn main() -> Result<(), EvalAltResult> {
let mut engine = Engine::new();
fn add(x: i64, y: i64) -> i64 {
x + y
}
engine.register_fn("add", add);
let result = engine.eval::<i64>("add(40, 2)")?;
println!("Answer: {}", result); // prints 42
Ok(())
}