Method GetSet

tx_btree.go:247–254

(bucket string, key, value []byte)

}

func (tx *Tx) GetSet(bucket string, key, value []byte) (oldValue []byte, err error) {
	return oldValue, tx.update(bucket, key, func(b []byte) ([]byte, error) {
		oldValue = b
		return value, nil
	}, func(oldTTL uint32) (uint32, error) {
		return oldTTL, nil
	})
}

// Has returns true if the record exists. It checks without retrieving the
// value from disk making lookups significantly faster while keeping memory