std::allocator_traits< _Alloc >(3) Library Functions Manual NAME std::allocator_traits< _Alloc > - Uniform interface to all allocator types. SYNOPSIS #include Inherited by __gnu_cxx::__alloc_traits< _Char_alloc_type >, __gnu_cxx::other< _Alloc >, __gnu_cxx::__alloc_traits< _CharT_alloc_type >, __gnu_cxx::other< _Alloc >, __gnu_cxx::__alloc_traits< _Node_alloc_type >, __gnu_cxx::other< _Alloc >, __gnu_cxx::__alloc_traits< _Bit_alloc_type >, __gnu_cxx::other< _Alloc >, __gnu_cxx::__alloc_traits< _Tp_alloc_type >, __gnu_cxx::__alloc_traits< _Map_alloc_type >, __gnu_cxx::other< _Alloc >, __gnu_cxx::__alloc_traits< _Pair_alloc_type >, __gnu_cxx::other< _Alloc >, __gnu_cxx::__alloc_traits< _Key_alloc_type >, __gnu_cxx::other< _Alloc >, __gnu_cxx::__alloc_traits< _Val_alloc_type >, __gnu_cxx::other< _Alloc >, __gnu_cxx::__alloc_traits< _Node_allocator >, __gnu_cxx::pointer< _Tp_alloc_type >, __gnu_cxx::__alloc_traits< allocator_type >, __gnu_cxx::other< _Alloc >, __gnu_cxx::other< _Alloc >, __gnu_cxx::other< _Alloc >, __gnu_cxx::other< _Alloc >, __gnu_cxx::other< _Alloc >, __gnu_cxx::other< _Alloc >, __gnu_cxx::__alloc_traits< std::allocator< value_type > >, and __gnu_cxx::__alloc_traits< _Alloc, typename >. Public Types typedef _Alloc allocator_type The allocator type. using const_pointer The allocator's const pointer type. using const_void_pointer The allocator's const void pointer type. using difference_type The allocator's difference type. using is_always_equal Whether all instances of the allocator type compare equal. using pointer The allocator's pointer type. using propagate_on_container_copy_assignment How the allocator is propagated on copy assignment. using propagate_on_container_move_assignment How the allocator is propagated on move assignment. using propagate_on_container_swap How the allocator is propagated on swap. template using rebind_alloc template using rebind_traits using size_type The allocator's size type. typedef _Alloc::value_type value_type The allocated type. using void_pointer The allocator's void pointer type. Static Public Member Functions static constexpr pointer allocate (_Alloc &__a, size_type __n) Allocate memory. static constexpr pointer allocate (_Alloc &__a, size_type __n, const_void_pointer __hint) Allocate memory. template requires __can_construct<_Alloc, _Tp, _Args...>static constexpr void construct (_Alloc &__a, _Tp *__p, _Args &&... __args) noexcept(_S_nothrow_construct< _Tp, _Args... >())" Construct an object of type _Tp. static constexpr void deallocate (_Alloc &__a, pointer __p, size_type __n) Deallocate memory. template static constexpr void destroy (_Alloc &__a, _Tp *__p) noexcept(_S_nothrow_destroy< _Tp >()) Destroy an object of type _Tp. static constexpr size_type max_size (const _Alloc &__a) noexcept The maximum supported allocation size. static constexpr _Alloc select_on_container_copy_construction (const _Alloc &__rhs) Obtain an allocator to use when copying a container. Detailed Description template struct std::allocator_traits< _Alloc >"Uniform interface to all allocator types. Since C++11 Member Typedef Documentation template typedef _Alloc std::allocator_traits< _Alloc >::allocator_type The allocator type. template using std::allocator_traits< _Alloc >::const_pointer The allocator's const pointer type. Alloc::const_pointer if that type exists, otherwise pointer_traits::rebind template using std::allocator_traits< _Alloc >::const_void_pointer The allocator's const void pointer type. Alloc::const_void_pointer if that type exists, otherwise pointer_traits::rebind template using std::allocator_traits< _Alloc >::difference_type The allocator's difference type. Alloc::difference_type if that type exists, otherwise pointer_traits::difference_type template using std::allocator_traits< _Alloc >::is_always_equal Whether all instances of the allocator type compare equal. Alloc::is_always_equal if that type exists, otherwise is_empty::type template using std::allocator_traits< _Alloc >::pointer The allocator's pointer type. Alloc::pointer if that type exists, otherwise value_type* template using std::allocator_traits< _Alloc >::propagate_on_container_copy_assignment How the allocator is propagated on copy assignment. Alloc::propagate_on_container_copy_assignment if that type exists, otherwise false_type template using std::allocator_traits< _Alloc >::propagate_on_container_move_assignment How the allocator is propagated on move assignment. Alloc::propagate_on_container_move_assignment if that type exists, otherwise false_type template using std::allocator_traits< _Alloc >::propagate_on_container_swap How the allocator is propagated on swap. Alloc::propagate_on_container_swap if that type exists, otherwise false_type template using std::allocator_traits< _Alloc >::size_type The allocator's size type. Alloc::size_type if that type exists, otherwise make_unsigned::type template typedef _Alloc::value_type std::allocator_traits< _Alloc >::value_type The allocated type. template using std::allocator_traits< _Alloc >::void_pointer The allocator's void pointer type. Alloc::void_pointer if that type exists, otherwise pointer_traits::rebind Member Function Documentation template constexpr pointer std::allocator_traits< _Alloc >::allocate (_Alloc & __a, size_type __n) [inline], [static], [nodiscard], [constexpr] Allocate memory. Parameters __a An allocator. __n The number of objects to allocate space for. Calls a.allocate(n) template constexpr pointer std::allocator_traits< _Alloc >::allocate (_Alloc & __a, size_type __n, const_void_pointer __hint) [inline], [static], [nodiscard], [constexpr] Allocate memory. Parameters __a An allocator. __n The number of objects to allocate space for. __hint Aid to locality. Returns Memory of suitable size and alignment for n objects of type value_type Returns a.allocate(n, hint) if that expression is well-formed, otherwise returns a.allocate(n) template template requires __can_construct<_Alloc, _Tp, _Args...>constexpr void std::allocator_traits< _Alloc >::construct (_Alloc & __a, _Tp * __p, _Args &&... __args) [inline], [static], [constexpr], [noexcept]" Construct an object of type _Tp. Parameters __a An allocator. __p Pointer to memory of suitable size and alignment for Tp __args Constructor arguments. Calls __a.construct(__p, std::forward(__args)...) if that expression is well-formed, otherwise uses placement-new to construct an object of type _Tp at location __p from the arguments __args... template constexpr void std::allocator_traits< _Alloc >::deallocate (_Alloc & __a, pointer __p, size_type __n) [inline], [static], [constexpr] Deallocate memory. Parameters __a An allocator. __p Pointer to the memory to deallocate. __n The number of objects space was allocated for. Calls a.deallocate(p, n) template template constexpr void std::allocator_traits< _Alloc >::destroy (_Alloc & __a, _Tp * __p) [inline], [static], [constexpr], [noexcept] Destroy an object of type _Tp. Parameters __a An allocator. __p Pointer to the object to destroy Calls __a.destroy(__p) if that expression is well-formed, otherwise calls __p->~_Tp() template constexpr size_type std::allocator_traits< _Alloc >::max_size (const _Alloc & __a) [inline], [static], [constexpr], [noexcept] The maximum supported allocation size. Parameters __a An allocator. Returns __a.max_size() or numeric_limits::max() Returns __a.max_size() if that expression is well-formed, otherwise returns numeric_limits::max() template constexpr _Alloc std::allocator_traits< _Alloc >::select_on_container_copy_construction (const _Alloc & __rhs) [inline], [static], [constexpr] Obtain an allocator to use when copying a container. Parameters __rhs An allocator. Returns __rhs.select_on_container_copy_construction() or __rhs Returns __rhs.select_on_container_copy_construction() if that expression is well-formed, otherwise returns __rhs Author Generated automatically by Doxygen for libstdc++ from the source code. libstdc++ std::allocator_traits< _Alloc >(3)