// read a YAML file cv::FileStorage fs("config.yaml", cv::FileStorage::READ); // get the root node cv::FileNode rootNode = fs.root(); // iterate over all child nodes for (cv::FileNodeIterator it = rootNode.begin(); it != rootNode.end(); ++it) { // do something with the current node // ... } // close the file fs.release();This code snippet reads a YAML file "config.yaml" using OpenCV's FileStorage class. It then gets the root node and iterates over all its child nodes using a for loop and the FileNodeIterator. The loop stops when the iterator reaches the end of the FileNode sequence, which is returned by the end() method. Package/library: OpenCV (https://opencv.org/)