C++读取txt文本数据到vector / 读取文本文件的列并按顺序存到map里

//读取txt文本中的float数据（按行读取）
void read_txt_input(std::string path,std::vector<float> &pydata){
  std::ifstream infile;
  infile.open(path);
  float value;
  if(!infile){
    std::cout<<"file not found"<<endl;
    exit(1);
  }
  while(infile>>value){
    pydata.push_back(value);
  }
  infile.close();
}
//工作中修改tensor数据方式
std::vector<float> py_y_output;
std::string path="";
read_txt_input(path,py_y_output);
int y_output_n = y_output->shape()[0];
int y_output_h = y_output->shape()[1];
int y_output_w = y_output->shape()[2];
int y_output_c = y_output->shape()[3];
for (int i=0;i<(y_output_n*y_output_h*y_output_w*y_output_c;i++)
{  
   y_output->mudata<float>()[i]=
}
//工作中给tensor赋值
copy(std::unique_ptr<const venus::Tensor>& src,std::unique_ptr<venus::Tensor> &dst){
  auto shape=src->shape();
  dst->reshape(shape);
  int size = 1;
  for(auto s:shape){
  size*=s;
}
float* src_data=src->mudata<float>();
float* dst_data=dst->mudata<float>();
memcpy(dst_data,src_data,sizeof(float)*size;
}
copy(float* src,std::unique_ptr<venus::Tensor> &dst,std::vector<int> shape){
  int size = 1;
  for(auto s:shape){
  size*=s;
}
  std->reshape(shape);
  float* dst_data=src->mudata<float>();
  memcpy(dst_data,src,sizeof(float)*size;
}



// 读取文本文件的前两列，顺序保存在map里（使用了sstream)
int readline_model_txt(std::string txt_file,std::map<int,std::pair<std::string,std::string>>& dataMap){                                                                                                            
    std::ifstream file(txt_file);
    if (file.is_open()) {       
        std::string line;
        int index = 0;   
        while (std::getline(file, line)) {
            std::stringstream ss(line);
            std::string layer_op;
            std::string layer_name;
            // 用stringstream分割每一行，获取第二列的值
            ss >> layer_op >> layer_name;
            dataMap[index] = std::make_pair(layer_op,layer_name);
            index++;     
        }                
        file.close();    
    } else {             
        std::cout << "无法打开文件" << std::endl;
    }                    
    for (const auto& pair : dataMap) {
         std::cout << "[ " << pair.first << ", ( " << pair.second.first << " , " << pair.second.second << " ) ]" << std::endl;
    }                    
    return 0;            
} 


//
int main(){
  //std::unique_prt<venus::Tensor> pqmf_x =pqmf_net->get_input_by_name(n1);获取tensor
  std::vector<float> py_data;
  std::string path_py_data = "./test/py_data_"+std::to_string(k)+".txt";
  read_txt_input(path_py_data,py_data);
  //copy(py_data.data(),py_tensor,shape_size);

  std::map<int, std::pair<std::string,std::string>> txtMap;                                                                                                                                                   
  readline_model_txt(std::string(net_param_path),txtMap);


  return 0;
}