Values

// Values is a helper that converts an array command reply to a []interface{}.
// If err is not equal to nil, then Values returns nil, err. Otherwise, Values
// converts the reply as follows:
//
//  Reply type      Result
//  array           reply, nil
//  nil             nil, ErrNil
//  other           nil, error
func Values(reply interface{}, err error) ([]interface{}, error) {
    if err != nil {
        return nil, err
    }
    switch reply := reply.(type) {
    case []interface{}:
        return reply, nil
    case nil:
        return nil, ErrNil
    case Error:
        return nil, reply
    }
    return nil, fmt.Errorf("redigo: unexpected type for Values, got type %T", reply)
}