| 1749 | //! |
| 1750 | //! <b>Complexity</b>: Constant. |
| 1751 | BOOST_CONTAINER_ATTRIBUTE_NODISCARD BOOST_CONTAINER_FORCEINLINE reference at(size_type n) |
| 1752 | { |
| 1753 | this->priv_throw_if_out_of_range(n); |
| 1754 | return this->m_holder.start()[difference_type(n)]; |
| 1755 | } |
| 1756 | |
| 1757 | //! <b>Requires</b>: size() > n. |
| 1758 | //! |