That's the Go approach, where every value is zeroed so it makes sense for enum values to have a 'none' or 'other' or 'unknown' value as the first value. (note

That's the Go approach, where every value is zeroed so it makes sense for enum values to have a 'none' or 'other' or 'unknown' value as the first value. (note that Go doesn't have enums as a language feature, but you can use its const declaration to create enum-like constants)