Function load_vertex_data

example/mutual.cc:131–160

 */
template <typename T, typename TCSR>
void load_vertex_data(TCSR& tcsr, std::true_type) {
  using VDATA = typename TCSR::u_data_t;

  auto& cluster_info = plato::cluster_info_t::get_instance();
  plato::stop_watch_t watch;
  watch.mark("t1");

  auto pvcache = plato::load_vertices_cache<std::vector<T>>(
    FLAGS_input_vertices, plato::edge_format_t::CSV, [&](std::vector<T>* item, char* content) {
      const char* sep = FLAGS_separator.c_str();
      char* pSave  = nullptr;
      char* pToken = nullptr;
      pToken = strtok_r(content, sep, &pSave);
      while (pToken) {
        T val = std::strtoul(pToken, nullptr, 0);
        item->emplace_back(val);
        pToken = strtok_r(nullptr, sep, &pSave);
      }
      return true;
    });

  tcsr.template load_vertices_data_from_cache<std::vector<T>>(
    *pvcache,
    [](plato::vid_t /* v_i */, VDATA& v_data, std::vector<T>& value) {
      std::copy(value.begin(), value.end(), std::back_inserter(v_data.mutual_));
    }
  );

  LOG_IF(INFO, 0 == cluster_info.partition_id_) << "load tcsr vertices costs: " << watch.show("t1") / 1000.0 << "s";
}

/**
 * @brief