[c++] Return a class safely
C++ Class return
2023-09-27 14:23:24 时间
Passing cv::Mat by reference or return it?
If copy elision gets applied, the 2nd case would be more efficient.
void myimread (cv::Mat &mat, const std::string &imgname){ mat = imread(imgname); }
cv::Mat myimread (const std::string &imgname){ return imread(imgname); }
什么是copy elision