Created
May 31, 2018 05:28
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| package main | |
| import ( | |
| "fmt" | |
| "strings" | |
| ) | |
| type IPAddr [4]byte | |
| func (p IPAddr) String() string { | |
| var v []string | |
| for i := range p { | |
| byte := p[i] | |
| s := fmt.Sprintf("%v", byte) | |
| v = append(v, s) | |
| } | |
| return fmt.Sprintf("%v", strings.Join(v[:],".")) | |
| } | |
| // 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) | |
| } | |
| } |
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https://tour.go-zh.org/methods/18