1*d4726bddSHONG Yifan use wasm_bindgen::prelude::*; 2*d4726bddSHONG Yifan 3*d4726bddSHONG Yifan #[wasm_bindgen] double(i: i32) -> i324*d4726bddSHONG Yifanpub fn double(i: i32) -> i32 { 5*d4726bddSHONG Yifan i * 2 6*d4726bddSHONG Yifan } 7*d4726bddSHONG Yifan 8*d4726bddSHONG Yifan #[allow(dead_code)] main()9*d4726bddSHONG Yifanfn main() { 10*d4726bddSHONG Yifan println!("Hello {}", double(2)); 11*d4726bddSHONG Yifan } 12