Go casting byte to string

main.go

package main

import "fmt"

type IPAddr [4]byte

func (i IPAddr) String() string {
	return string(i[0]) // Returns an empty string
	return fmt.Sprintf("%v.%v.%v.%v", i[0], i[1], i[2], i[3]) // Only way to cast byte to string is through Sprintf
}

func main() {
	addrs := map[string]IPAddr{
		"loopback":  {127, 0, 0, 1},
		"googleDNS": {8, 8, 8, 8},
	}
	for n, a := range addrs {
		fmt.Printf("%v: %v\n", n, a)
	}
}