Sorry I misunderstand it. What I did is a conversion to "name".
2019年1月12日土曜日 5時54分12秒 UTC+9 伊藤和也:
>
> type name string
>
> /*func (n name) upper() string {
> return strings.ToUpper(string(n))
> }
>
> func (n name) lower() string {
> return strings.ToLower(string(n))
> }*/
>
> func main() {
> fmt.Println(name("john"))
> }
>
>
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