Go函数可以返回多个值

 1 package main
 2
 3 import "fmt"
 4
 5 func swap(x, y string) (string, string){
 6     return y,x
 7 }
 8
 9 func main() {
10     a, b := swap("Google", "Runoob")
11     fmt.Println(a, b)
12 }