std::polymorphic<T, Allocator>::get_allocator

 

C++

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功能特性测试宏 (C++20)

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概念库 (C++20)

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符号索引

外部库

 

内存管理库

分配器 allocator allocator_traits (C++11) allocation_result (C++23) scoped_allocator_adaptor (C++11) allocator_arg (C++11) uses_allocator (C++11) uses_allocator_construction_args (C++20) make_obj_using_allocator (C++20) pmr::polymorphic_allocator (C++17) uninitialized_construct_using_allocator (C++20) 内存资源 pmr::memory_resource (C++17) pmr::get_default_resource (C++17)     pmr::set_default_resource (C++17) pmr::new_delete_resource (C++17) pmr::pool_options (C++17) pmr::null_memory_resource (C++17) pmr::synchronized_pool_resource (C++17) pmr::unsynchronized_pool_resource (C++17)     pmr::monotonic_buffer_resource (C++17) 显式生存期管理 start_lifetime_as (C++23) start_lifetime_as_array (C++23) 用于复合类设计的类型 indirect (C++26) polymorphic (C++26) 杂项 pointer_traits (C++11) to_address (C++20) addressof (C++11) align (C++11) assume_aligned (C++20) is_sufficiently_aligned (C++26) C 库 malloc      free calloc realloc aligned_alloc (C++17) free_sized (C++26) free_aligned_sized (C++26) memalignment (C++26) 未初始化存储 (C++20 前*) raw_storage_iterator get_temporary_buffer return_temporary_buffer 垃圾收集器支持 (C++23 前) declare_reachable (C++11) declare_no_pointers (C++11) pointer_safety (C++11) undeclare_reachable (C++11) undeclare_no_pointers (C++11) get_pointer_safety (C++11)

<memory> 专门算法 低层内存管理 operator newoperator new[] operator deleteoperator delete[] nothrow nothrow_t new_handler set_new_handler get_new_handler (C++11) bad_alloc bad_array_new_length (C++11) align_val_t (C++17) destroying_delete_t (C++20) launder (C++17) 智能指针 unique_ptr (C++11) shared_ptr (C++11) weak_ptr (C++11) auto_ptr (C++17 前*) owner_less (C++11) owner_less<void> (C++17) owner_hash (C++26) owner_equal (C++26) enable_shared_from_this (C++11) bad_weak_ptr (C++11) default_delete (C++11) out_ptr_t (C++23) inout_ptr_t (C++23)

 

std::polymorphic

成员函数

polymorphic::polymorphic

polymorphic::~polymorphic

polymorphic::operator=

观察器

polymorphic::operator->polymorphic::operator*

polymorphic::valueless_after_move

polymorphic::get_allocator

修改器

polymorphic::swap

非成员函数

swap(std::polymorphic)

 

constexpr allocator_type get_allocator() const noexcept;		(C++26 起)

See More

获取关联的分配器。

返回值

alloc