std::destroying_delete_t, std::destroying_delete
来自cppreference.com
                    
                                        
                    
                    
                                                            
                    |   定义于头文件  <new>
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|   struct destroying_delete_t { explicit destroying_delete_t() = default; };  | 
(C++20 起) | |
|   inline constexpr destroying_delete_t destroying_delete{};  | 
(C++20 起) | |
用于鉴别 operator delete 的销毁删除形式的标签类型。
参阅
|    解分配函数   (函数)  |