Function PrepareForInitialization

catboost/libs/data/util.h:37–48

    template <class T>
    void PrepareForInitialization(
        size_t size,
        size_t prevTailSize,
        TVector<T>* data
    ) {
        if (prevTailSize) {
            CB_ENSURE(prevTailSize <= size, "Data remainder is too large");
            CB_ENSURE(prevTailSize <= data->size(), "Data remainder is too large");
            std::move(data->end() - prevTailSize, data->end(), data->begin());
        }
        data->yresize(size);
    }


    template <class T>