Function AddIgnoredFeatures

catboost/libs/data/quantization.cpp:2144–2155

    }

    static void AddIgnoredFeatures(const TFeaturesLayout& addFromLayout, TFeaturesLayout* updatedLayout) {
        auto featuresIntersectionSize = Min(
            addFromLayout.GetExternalFeatureCount(),
            updatedLayout->GetExternalFeatureCount()
        );

        for (auto i : xrange(featuresIntersectionSize)) {
            if (addFromLayout.GetExternalFeaturesMetaInfo()[i].IsIgnored) {
                updatedLayout->IgnoreExternalFeature(i);
            }
        }
    }


    static TFeaturesLayoutPtr InitFeaturesLayoutForQuantizedData(