Merge "Correctly handle empty vector when printing" into main

template <typename T>

std::string dumpVector(const std::vector<T>& values,

                       std::string (*valueToString)(const T&) = constToString) {

    std::string dump = valueToString(values[0]);

    for (size_t i = 1; i < values.size(); i++) {

        dump += ", " + valueToString(values[i]);

    std::string out;

    for (const auto& value : values) {

        out += out.empty() ? "[" : ", ";

        out += valueToString(value);

    }

    return dump;

    return out.empty() ? "[]" : (out + "]");

}

const char* toString(bool value);