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ä½ç½®ï¼šé¦–页 > C++ å‚考手册 >动æ€å†…å˜ç®¡ç† > std::allocator_arg_t
std::allocator_arg_t
| 定义于头文件 <memory>
|
||
| struct allocator_arg_t {}; |
(C++11 èµ·) (C++17 å‰) |
|
| struct allocator_arg_t { explicit allocator_arg_t() = default; }; |
(C++17 èµ·) | |
std::allocator_arg_t 是用于消æ§ä¹‰å…·åˆ†é…å™¨å¯¹è±¡ï¼ŒåŒ…å« std::tuple 〠std::function 〠std::promise å’Œ std::packaged_task çš„æž„é€ å‡½æ•°å’Œæˆå‘˜å‡½æ•°çš„空类类型。
å‚阅
| (C++11) |
用于选择具分é…å™¨çš„æž„é€ å‡½æ•°çš„ std::allocator_arg_t 对象 (常é‡) |
| (C++11) |
检查指定的类型是å¦æ”¯æŒä½¿ç”¨åˆ†é…å™¨çš„æž„é€ (类模æ¿) |