code: func NewScanIntHandler(i *int) ReplyHandler {
  	return func(reply interface{}) error {
  		var err error
  		(*i), err = redis.Int(reply, nil)
  		if err != nil {
  			return err
  		}
  		return nil
  	}
  }
docs: // NewScanIntHandler returns a ReplyHandler which will convert the reply to an
  // integer and set the value of i to the converted integer. The ReplyHandler
  // will return an error if there was a problem converting the reply.