Go Enums Quick Example

example.go

package example

type AnimalType uint8

const (
	AnimalTypeUnknown AnimalType = iota
	AnimalTypeDog
	AnimalTypeCat
	AnimalTypeRabbit
	AnimalTypeSnake
	AnimalTypeJellyfish
)

var animalTypeStringMap = map[AnimalType]string{
	AnimalTypeUnknown:   "unknown",
	AnimalTypeDog:       "dog",
	AnimalTypeCat:       "cat",
	AnimalTypeRabbit:    "rabbit",
	AnimalTypeSnake:     "snake",
	AnimalTypeJellyfish: "jellyfish",
}

func (a AnimalType) String() string {
	str, ok := animalTypeStringMap[a]
	if ok {
		return str
	}

	return ""
}

// func (a AnimalType) Scan ...
// func (a AnimalType) Marshal / Unmarshal