Go Standard Library Cookbook

How to do it...

1. Open the console and create the folder chapter07/recipe09.
2. Navigate to the directory.
3. Create the rest.go file with the following content:

        package main        import (          "encoding/json"          "fmt"          "io"          "io/ioutil"          "net/http"          "strconv"          "strings"        )        const addr = "localhost:7070"        type City struct {          ID string          Name string `json:"name"`          Location string `json:"location"`        }        func (c City) toJson() string {          return fmt.Sprintf(`{"name":"%s","location":"%s"}`,                             c.Name, c.Location)        }        func main() {          s := createServer(addr)          go s.ListenAndServe()          cities, err := getCities()          if err != nil {            panic(err)          }          fmt.Printf("Retrived cities: %v\n", cities)          city, err := saveCity(City{"", "Paris", "France"})          if err != nil {            panic(err)          } fmt.Printf("Saved city: %v\n", ...