C++ (Cpp) utils::load_protobuff_dataset示例

int main(int argc, char * argv[]) {
    GFLAGS_NAMESPACE::ParseCommandLineFlags(&argc, &argv, true);
    cout << "dbpath = " << FLAGS_dbpath << endl;
    // Open a database file
    SQLite::Database    db(FLAGS_dbpath);
    // Load mapping from concepts to names
    vector<string> index2concept;
    if (!utils::file_exists(FLAGS_clean_index2target)) {
        std::atomic<int> i(0);
        auto concept_redirections = utils::load_redirection_list(FLAGS_redirections, [&i](std::string&& s)->std::string {
            if (++i % 1000 == 0) {
                std::cout << i << " cleaned redirection names \r" << std::flush;
            }
            return utils::join(
                utils::xml_cleaner::split_punct_keep_brackets(s),
                " ");
        }, FLAGS_j);
        index2concept = utils::load_list(FLAGS_index2target);

        for (auto& concept : index2concept) {
            if (concept_redirections.find(concept) != concept_redirections.end()) {
                concept = utils::capitalize(concept_redirections.at(concept));
            } else {
                concept = utils::capitalize(concept);
            }
        }
        utils::save_list(index2concept, FLAGS_clean_index2target);
    } else {
        index2concept = utils::load_list(FLAGS_clean_index2target);
    }
    // Load some examples from DB
    SQLite::Statement   query(db, "SELECT lines FROM articles");
    // Convert protobuf -> vector<string>
    auto els = load_protobuff_dataset(query, index2concept, 100);
    cout << "got labeled examples" << endl;
    for (auto& el : els) {
        std::cout << utils::join(el[0], " ")
                  << " (\033[4m" << utils::join(el[1], "\x1B[m, \033[4m") << "\x1B[m)" << std::endl;
    }
}