utils.h

#pragma once

#include <sstream>
#include <fstream>
#include <vector>
#include <tuple>

// Read in the csv file and return file locations and labels as vector of tuples.
auto ReadCsv(std::string& location) -> std::vector<std::tuple<std::string /*file location*/, int64_t /*label*/>> {

    std::fstream in(location, std::ios::in);
    std::string line;
    std::string name;
    std::string label;
    std::vector<std::tuple<std::string, int64_t>> csv;

    while (getline(in, line))
    {
        std::stringstream s(line);
        getline(s, name, ',');
        getline(s, label, ',');

        csv.push_back(std::make_tuple("../" + name, stoi(label)));
    }

    return csv;
}