Go奇技淫巧之enum

animalY := enums.AnimalsEnum.Lion
animalX := enums.AnimalsEnum.Get("Jaguar")

package enums

import (
   "reflect"
)

type animalsEnumDef struct {
   Camel, Gorilla, Jaguar, Monkey, Lion int
}

func (c animalsEnumDef) Get(id string) int {
   vo := reflect.ValueOf(c)
   typeVo := vo.Type()

   for i := 0; i < vo.NumField(); i++ {
      if typeVo.Field(i).Name == id {
         return vo.Field(i).Interface().(int)
      }
   }
   return 0
}

var AnimalsEnum = animalsEnumDef{
   Camel:   12,
   Gorilla: 89,
   Jaguar:  91,
   Monkey:  107,
   Lion:    114,
}

package main

import (
   "fmt"
   "github.com/enums/enums"
)

func main() {
   checkEnum()
   getEnum()
}

func checkEnum(){
   myAnimal := 12
   animal := enums.AnimalsEnum.Lion
   if myAnimal == animal {
      fmt.Print("\nAnimal is a Lion.")
   }else{
      fmt.Print("\nAnimal is not a Lion.")
   }
}

func getEnum(){
   animalX := enums.AnimalsEnum.Get("Jaguar")
   fmt.Printf("\nJaguar ID is: %v", animalX)
}