Method begin

src/ifcparse/rocksdb_map_adapter.h:306–315

    };

    iterator begin() const {
#ifdef IFOPSH_WITH_ROCKSDB
        auto iter = std::unique_ptr<rocksdb::Iterator>(db_->NewIterator(rocksdb::ReadOptions{}));
        iter->Seek(prefix_);
        if (iter->Valid() && iter->key().starts_with(prefix_)) {
            return iterator(db_, prefix_, std::move(iter), codec_);
        }
#endif
        return end();
    }

    iterator end() const {
        return iterator();