Implement the following types and define ServeHTTP methods on them. Register them to handle specific paths in your web server.

go_tour_ex_web_server.go

package main

import (
    "fmt"
    "net/http"
)

type MyString string
// implements http.Handler
func (s MyString) ServeHTTP(
    writer http.ResponseWriter,
    req *http.Request) {
    fmt.Fprint(writer, s)
}

type MyStruct struct {
    Greeting string
    Punct string
    Who string
}
// implements http.Handler
func (s *MyStruct) ServeHTTP(
    writer http.ResponseWriter,
    req *http.Request) {
    fmt.Fprint(writer, s.Greeting, s.Punct, s.Who)
}

func main() {
    // register http handlers with respective path/pattern
    http.Handle("/string", MyString("I'm a frayed knot."))
    http.Handle("/struct", &MyStruct{"Hello", ":", "Gophers!"})
    http.ListenAndServe("localhost:4000", nil)
}