浅谈Go中数字转换字符串的正确姿势

string(120)

strconv.Itoa(120)// 返回"120"

package main

import (
 "fmt"
 "strings"
 "strconv"
)

type IPAddr [4]byte

func (p IPAddr) String() string {
  var ipParts []string
  for _, item := range p {
  ipParts = append(ipParts, strconv.Itoa(int(item)))
  }
  return strings.Join(ipParts, ".")
}

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)
  }
}