// GET /hello/warp => 200 OK with body "Hello, warp!"
let hello = warp::path!("hello" / String)
.and(warp::header::<String>("user-agent"))
// GET /hello/warp => 200 OK with body "Hello, warp!"
let hello = warp::path!("hello" / String)
.and(warp::header::<String>("user-agent"))