#![feature(plugin)] #![plugin(rocket_codegen)] extern crate rocket; #[get("/hello//")] fn hello(name: &str, age: i8) -> String { format!("Hello, {} year old named {}!", age, name) } #[error(404)] fn not_found(req: &rocket::Request) -> String { format!("

Sorry, but '{}' is not a valid path!

Try visiting /hello/<name>/<age> instead.

", req.uri) } fn main() { rocket::ignite() .mount("/", routes![hello]) .catch(errors![not_found]) .launch(); }