The Dlib library can load CSV files directly to its matrix type as the Shogun library does, but it does not require them to create a parser object. For this operation, we can use a simple C++ streaming operator and a standard std::ifstream object.

As a first step, we make the necessary includes, as follows:

include <Dlib/matrix.h>
using namespace Dlib;

Then, we define the matrix object and load data from the file, like this:

matrix<double> data;
std::ifstream file("iris_fix.csv");
file >> data;
std::cout << data << std::endl;

In the Dlib library, matrix objects are used for training machine learning algorithms directly, without the need to transform them into intermediate dataset types.