Method getString

src/Base/Unit.cpp:239–271

}

std::string Unit::getString() const
{
    auto buildSubStr = [&](auto index) {
        const std::string unitStrString {unitSymbols.at(index)};
        const auto absol {abs(_exps.at(index))};

        return absol <= 1 ? unitStrString
                          : fmt::format("{}^{}", unitStrString, std::to_string(absol));
    };

    auto buildStr = [&](auto indexes) {
        std::vector<std::string> subStrings {};
        std::transform(indexes.begin(), indexes.end(), std::back_inserter(subStrings), buildSubStr);

        return fmt::format("{}", fmt::join(subStrings, "*"));
    };

    //------------------------------------------------------------------------------

    auto [posValIndexes, negValIndexes] = nonZeroValsIndexes();
    auto numeratorStr = buildStr(posValIndexes);
    if (negValIndexes.empty()) {
        return numeratorStr;
    }

    auto denominatorStr = buildStr(negValIndexes);

    return fmt::format(
        "{}/{}",
        numeratorStr.empty() ? "1" : numeratorStr,
        negValIndexes.size() > 1 ? fmt::format("({})", denominatorStr) : denominatorStr
    );
}

std::string Unit::representation() const
{