load_csv<uint8_t> loads ASCII values #2453

#include <iostream>
#include <fstream>
#include <xtensor/xarray.hpp>
#include <xtensor/xcsv.hpp>
#include <xtensor/xio.hpp>
#include <stdint.h>

int main() {
    std::ifstream f;
    f.open("/tmp/mymatrix.csv");
    if (!f.is_open()) {
        throw std::runtime_error("failed to open file");
    }
    xt::xarray<uint8_t> m = xt::load_csv<uint8_t>(f);
    f.close();
    std::cout << m << std::endl;
    return 0;
}