Function main

examples/cpp/hello_row/main.cc:59–257

};

int main() {
  std::cout << "=== Fory C++ Row Format Example ===" << std::endl << std::endl;

  // ============================================================================
  // Example 1: Manual Row Writing with Schema
  // ============================================================================
  std::cout << "--- Example 1: Manual Row Writing ---" << std::endl;
  {
    using namespace fory::row;

    // Define schema with fields
    auto name_field = field("name", utf8());
    auto age_field = field("age", int32());
    auto score_field = field("score", float32());
    auto tags_field = field("tags", list(utf8()));

    std::vector<FieldPtr> fields = {name_field, age_field, score_field,
                                    tags_field};
    auto row_schema = schema(fields);

    // Create a row writer
    RowWriter writer(row_schema);
    writer.reset();

    // write primitive fields
    writer.write_string(0, "Alice");
    writer.write(1, static_cast<int32_t>(25));
    writer.write(2, 95.5f);

    // write array field
    writer.set_not_null_at(3);
    int array_start = writer.cursor();
    auto list_type = std::dynamic_pointer_cast<ListType>(utf8());
    ArrayWriter array_writer(list(utf8()), &writer);
    array_writer.reset(3);
    array_writer.write_string(0, "developer");
    array_writer.write_string(1, "team-lead");
    array_writer.write_string(2, "mentor");
    writer.set_offset_and_size(3, array_start, writer.cursor() - array_start);

    // Convert to row and read back
    auto row = writer.to_row();

    std::cout << "Written row:" << std::endl;
    std::cout << "  name: " << row->get_string(0) << std::endl;
    std::cout << "  age: " << row->get_int32(1) << std::endl;
    std::cout << "  score: " << row->get_float(2) << std::endl;

    auto tags_array = row->get_array(3);
    std::cout << "  tags: [";
    for (int i = 0; i < tags_array->num_elements(); ++i) {
      std::cout << tags_array->get_string(i);
      if (i < tags_array->num_elements() - 1)
        std::cout << ", ";
    }
    std::cout << "]" << std::endl;

    // Print full row string representation