//【 // printf("sizeof std::string %lu\n",sizeof(std::string)); //32 // printf("sizeof std::pmr::string %lu\n",sizeof(std::pmr::string)); //40 稍大一点 //】 底层内存辅助函数:(大页) #include <sys/ipc.h> #include <sys/shm.h>
template<> struct hash<std::u32string>; (C++11 起) template<> struct hash<std::pmr::string>; template<> struct hash<std::pmr::wstring>;template<> struct hash<std::pmr::u16string>;template<> struct hash<std::pmr::u32string>; (C++17 起) template<> struct hash<std::u8string>;...