如何利用 C++ 生態系統中的流行函式庫和框架來優化程式碼開發效率

#include <QtWidgets/QApplication>
#include <QtWidgets/QLabel>

int main(int argc, char *argv[]) {
  QApplication app(argc, argv);
  QLabel label("Hello, Qt!");
  label.show();
  return app.exec();
}

#include <boost/algorithm/string/classification.hpp>
#include <string>

int main() {
  std::string str = "Hello, Boost!";
  if (boost::algorithm::all(str, boost::algorithm::is_alpha())) {
    std::cout << "The string contains only alphabetic characters." << std::endl;
  }
  return 0;
}

#include <tensorflow/core/public/session.h>
#include <tensorflow/core/public/tensor.h>

int main() {
  // 创建一个 tensorflow 会话
  tensorflow::Session session;

  // 定义一个占位符用于输入数据
  tensorflow::Placeholder input_placeholder("input", tensorflow::DataType::DT_FLOAT);

  // 创建一个简单的线性回归模型
  tensorflow::Tensor initial_value = tensorflow::Tensor(tensorflow::DT_FLOAT, {1});
  tensorflow::Variable weight = tensorflow::Variable(initial_value, "weight");
  tensorflow::Output output = tensorflow::matmul(input_placeholder, weight);

  // 训练模型
  std::vector<tensorflow::Tensor> input_data = {tensorflow::Tensor(tensorflow::DT_FLOAT, {1})};
  tensorflow::Tensor output_tensor;
  session.Run({{input_placeholder, input_data}}, {output}, {}, &output_tensor);

  // 打印训练后的值
  std::cout << "重量值：" << output_tensor.scalar<float>()() << std::endl;

  return 0;
}

#include <opencv2/opencv.hpp>

int main() {
  cv::Mat image = cv::imread("image.jpg");
  cv::cvtColor(image, image, cv::COLOR_BGR2GRAY);
  cv::blur(image, image, cv::Size(5, 5));
  cv::imshow("Grayscale Image", image);
  cv::waitKey(0);
  return 0;
}