Golang enum

enum.go

type scanStatus int

const (
	Pending scanStatus = iota
	Processing
)

// String returns respective string value of scanStatus enum.
// implements Stringer interface
func (s scanStatus) String() string {
	strings := [...]string{"PENDING", "INPROGRESS"}

	// fallback value to "PENDING"
	if s < Pending || s > Processing {
		return "PENDING"
	}

	return strings[s]
}

// Value returns scanStatus enums respective value.
// implements the sql.driver Valuer interface.
func (s scanStatus) Value() (driver.Value, error) { return s.String(), nil }