Strings

// Strings is a helper that converts an array command reply to a []string. If
// err is not equal to nil, then Strings returns nil, err. Nil array items are
// converted to "" in the output slice. Strings returns an error if an array
// item is not a bulk string or nil.
func Strings(reply interface{}, err error) ([]string, error) {
    if err != nil {
        return nil, err
    }
    switch reply := reply.(type) {
    case []interface{}:
        result := make([]string, len(reply))
        for i := range reply {
            if reply[i] == nil {
                continue
            }
            p, ok := reply[i].([]byte)
            if !ok {
                return nil, fmt.Errorf("redigo: unexpected element type for Strings, got type %T", reply[i])
            }
            result[i] = string(p)
        }
        return result, nil
    case nil:
        return nil, ErrNil
    case Error:
        return nil, reply
    }
    return nil, fmt.Errorf("redigo: unexpected type for Strings, got type %T", reply)
}