// +build ignore,OMIT package main import ( "fmt" "log" "net/http" ) type Greeting string func (g Greeting) ServeHTTP(w http.ResponseWriter, r *http.Request) { fmt.Fprint(w, g) } func main() { err := http.ListenAndServe("localhost:4000", Greeting("Hello, go")) if err != nil { log.Fatal(err) } }