Function GroupAndSortValues

library/cpp/grid_creator/binarization.cpp:1613–1640

        }

        std::pair<TVector<float>, TVector<float>> GroupAndSortValues(
            TFeatureValues&& features,
            bool filterNans,
            bool cumulativeWeights) {

            if (features.DefaultValue) {
                features.Values.push_back(features.DefaultValue->Value);
                const size_t defaultValuePosition = features.Values.size() - 1;
                return GroupAndSortWeighedValuesImpl(
                    std::move(features.Values),
                    TSingleValueWeightedIterator<float>(
                        1.0f,
                        defaultValuePosition,
                        (float)features.DefaultValue->Count),
                    filterNans,
                    /*isSorted*/ false,
                    /*normalizeWeights*/ false,
                    cumulativeWeights);
            } else {
                return GroupAndSortWeighedValuesImpl(
                    std::move(features.Values),
                    TRepeatIterator<float>(1.0f),
                    filterNans,
                    features.ValuesSorted,
                    /*normalizeWeights*/ false,
                    cumulativeWeights);
            }
        }

    }