package main

import "fmt"

func main() {
	age := HogeCDOfAge.CD()
	fmt.Println(age)
	var hogeCD HogeCD
	hogeCDOfAge := hogeCD.ValueOfCD(age)
	fmt.Println(hogeCDOfAge)
}

type HogeCD int

const (
	HogeCDOfAge HogeCD = iota
	HogeCDOfIge
	HogeCDOfUge
)

func (e HogeCD) CD() string {
	switch e {
	case HogeCDOfAge:
		return "age"
	case HogeCDOfIge:
		return "ige"
	case HogeCDOfUge:
		return "uge"
	default:
		return ""
	}
}

func (e HogeCD) ValueOfCD(cd string) HogeCD {
	switch cd {
	case "age":
		return HogeCDOfAge
	case "ige":
		return HogeCDOfIge
	case "uge":
		return HogeCDOfUge
	default:
		return -1
	}
}