//二维数组的初始化
1 vector<vector<float>> _box_parm(class_row_num, vector<float>(class_col_num, 0.0f));
类型转换问题
1 std::vector<uint32_t> local_anchors_x_v; 2 (static_cast<uint32_t *>((uint32_t*)_box_parm[row_index].data()))[0] = local_anchors_x_v[row_index];
原文：https://www.cnblogs.com/Davirain/p/13298405.html