Function GetFeatureIndices

catboost/libs/model_interface/c_api.cpp:200–219

    }

    bool GetFeatureIndices(std::function<TVector<size_t>()> getFeatureIndices, size_t** indices, size_t* count) {
        try {
            auto featureIndices = getFeatureIndices();
            *count = featureIndices.size();
            if (!featureIndices.size()) {
                *indices = nullptr;
            } else {
                *indices = (size_t*)malloc(sizeof(size_t) * featureIndices.size());
                if (!*indices) {
                    throw std::bad_alloc();
                }

                std::copy(featureIndices.begin(), featureIndices.end(), *indices);
            }
        } catch(...) {
            ErrorMessageHolder.Get().Message = CurrentExceptionMessage();
            return false;
        }
        return true;
    }

}  // namespace