Method subspan

util/generic/array_ref.h:200–203

* Obtains a ref that is a view over the `count` elements of this TArrayRef starting at `offset`. * * The behavior is undefined in either offset or count is out of range. */

     * The behavior is undefined in either offset or count is out of range.
     */
    TArrayRef subspan(size_t offset) const {
        Y_ASSERT(offset <= size());
        return TArrayRef(data() + offset, size() - offset);
    }

    TArrayRef subspan(size_t offset, size_t count) const {
        Y_ASSERT(offset + count <= size());