Parts of std::vector implementation from https://gcc.gnu.org/onlinedocs/gcc-9.2.0/libstdc++/api/a01699.html
| struct __array_traits | |
| { | |
| typedef _Tp _Type[_Nm]; //(1) | |
| typedef __is_swappable<_Tp> _Is_swappable; | |
| typedef __is_nothrow_swappable<_Tp> _Is_nothrow_swappable; | |
| static constexpr _Tp& | |
| _S_ref(const _Type& __t, std::size_t __n) noexcept | |
| { return const_cast<_Tp&>(__t[__n]); } | |
| static constexpr _Tp* | |
| _S_ptr(const _Type& __t) noexcept | |
| { return const_cast<_Tp*>(__t); } | |
| }; | |
| _GLIBCXX17_CONSTEXPR reference | |
| operator[](size_type __n) noexcept | |
| { return _AT_Type::_S_ref(_M_elems, __n); } //(2) |
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