rhai/examples/reuse_scope.rs
2022-10-27 13:38:21 +08:00

23 lines
594 B
Rust

//! An example that evaluates two pieces of code in separate runs, but using a common `Scope`.
use rhai::{Engine, EvalAltResult, Scope};
fn main() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new();
let mut scope = Scope::new();
engine.run_with_scope(&mut scope, "let x = 4 + 5")?;
println!("x = {}", scope.get_value::<i64>("x").unwrap());
for _ in 0..10 {
let result = engine.eval_with_scope::<i64>(&mut scope, "x += 1; x")?;
println!("result: {result}");
}
println!("x = {}", scope.get_value::<i64>("x").unwrap());
Ok(())
}