go-tour/exercise-stringer.go
2020-02-08 16:39:18 -06:00

22 lines
410 B
Go

package main
import "fmt"
type IPAddr [4]byte
func (ip IPAddr) String() string {
return fmt.Sprintf("%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3])
}
// TODO: Add a "String() string" method to IPaddr
func main() {
hosts := map[string]IPAddr{
"loopback": {127, 0, 0, 1},
"googleDNS": {8, 8, 8, 8},
}
for name, ip := range hosts {
fmt.Printf("%v: %v\n", name, ip)
}
}