template<>struct hash<float>; template<>struct hash<double>; template<>struct hash<longdouble>; template < class T > struct hash <T * > ; [编辑]标准库类型专业 std::hash<std::string> std::hash<std::u16string> std::hash<std::u32string> std::hash<std::wstring> (C++11) (C++...
template<> struct hash<long double>; template<> struct hash<std::nullptr_t>; template< class T > struct hash<T*>;在上述之外,标准库对所有(有作用域或无作用域)枚举类型提供特化。可以(但不要求)实现为 std::hash<std::underlying_type<Enum>::type>。
template<> struct hash<unsigned long>; template<> struct hash<unsigned long long>; template<> struct hash<float>; template<> struct hash<double>; template<> struct hash<long double>; template<> struct hash<std::nullptr_t>; // C++17 template< class T > struct hash<T*>;在...
template<> struct hash<double>; template<> struct hash<long double>; template< class T > struct hash<T*>; Spécialisations standard pour les types de bibliothèques std::hash<std::string>std::hash<std::u16string>std::hash<std::u32string>std::hash<std::wstring> (C++11) (C++11) (...
!is_signed : true, "cannot convert signed fixed-point to an unsigned arithmetic type" ); return static_cast<Number>( static_cast<long double>(data) / static_cast<UnderlyingIntegerType>(scaling_factor_inverse) ) ; } private: UnderlyingIntegerType data; fixed() = default; }; template<std:...
template<> struct hash<long>; template<> struct hash<long long>; template<> struct hash<unsigned long>; template<> struct hash<unsigned long long>; template<> struct hash<float>; template<> struct hash<double>; template<> struct hash<long double>; template< class T > struct hash<T*>;...
::_Hashtable<MyClass*, std::pair<MyClass* const, double>, std::allocator<std::pair<MyClass* const, double:__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_tra 浏览0提问于2019-03-13得票数 0 2回答 如何声明哈希函数以便在命名空间内的uno...
std::unordered_map<int, std::string> m3 = m2; // 移动构造函数 std::unordered_map<int, std::string> m4 = std::move(m2); // 范围构造函数 std::vector<std::pair<std::bitset<8>, int>> v = { {0x12, 1}, {0x01,-1} }; std::unordered_map<std::bitset<8>, double> m5(v....
#include <iostream> #include <unordered_set> struct Point { double x, y; }; int main() { Point pts[3] = {{1, 0}, {2, 0}, {3, 0}}; // points 是含有点的地址的 set std::unordered_set<Point *> points = { pts, pts + 1, pts + 2 }; // 更改每个 (i, 0) 的 y 坐...
#include <iostream> #include <unordered_set> struct Point { double x, y; }; int main() { Point pts[3] = {{1, 0}, {2, 0}, {3, 0}}; // points 是含有点的地址的 set std::unordered_set<Point *> points = { pts, pts + 1, pts + 2 }; // 更改每个 (i, 0) 的 y 坐...