c++ cheats

cppcheats.cpp

// creating a priority queue with a lambda less operator
auto pt_less = [&mat](const cv::Point& pt1, const cv::Point& pt2) -> bool {
    return mat.at<uint8_t>(pt1) < mat.at<uint8_t>(pt2);
};
priority_queue<cv::Point, vector<cv::Point>, decltype(pt_less)> erosion_candidates(pt_less);