Use a struct to pass values, rather than vars

main.go

@@ -7,21 +7,32 @@ import (
 	"time"
 )
 
-func getPage(url string) (int, time.Duration, error) {
+type Data struct {
+	length   int
+	duration time.Duration
+}
+
+func getPage(url string) (Data, error) {
+
+	var d Data
 
-	start := time.Now()
 	resp, err := http.Get(url)
 	if err != nil {
-		return 0, 0, err
+		return d, err
 	}
 
 	defer resp.Body.Close()
+	start := time.Now()
 	body, err := ioutil.ReadAll(resp.Body)
 	if err != nil {
-		return 0, 0, err
+		return d, err
 	}
+	dur := time.Since(start)
+
+	d.length = len(body)
+	d.duration = dur
 
-	return len(body), time.Since(start), nil
+	return d, nil
 }
 
 func main() {
@@ -34,11 +45,11 @@ func main() {
 	start := time.Now()
 
 	for name, url := range sites {
-		length, dur, err := getPage(url)
+		data, err := getPage(url)
 		if err != nil {
 			fmt.Printf("%s	%s\n", name, err)
 		}
-		fmt.Printf("%s	%d	%v\n", name, length, dur)
+		fmt.Printf("%s	%d	%v\n", name, data.length, data.duration)
 	}
 
 	fmt.Printf("Total time: %v\n", time.Since(start))