package mainimport (        "fmt"        "math/rand"        "time")var (        Web   = fakeSearch("web")        Image = fakeSearch("image")        Video = fakeSearch("video"))type Result stringtype Search func(query string) Resultfunc fakeSearch(kind string) Search {        return func(query string) Result {                time.Sleep(time.Duration(rand.Intn(100)) * time.Millisecond)                return Result(fmt.Sprintf("%s result for %q\n", kind, query))        }}func Google(query string) (results []Result) {        results = append(results, Web(query))        results = append(results, Image(query))        results = append(results, Video(query))        return}