Unless std::hash<Key> is a program-defined specialization, h(k1) will never throw an exception. Otherwise, std::hash<Key> is disabled. Disabled specializations do not satisfy Hash, do not satisfy FunctionObjec
std::hash 对各种字符串类的模板特化允许用户获得字符串的散列。 这些散列值与对应的 std::basic_string_view 类的散列相等:若 S 是这些字符串类型之一,SV 是对应的字符串视图类型,而 s 是S 类型的对象,则 std::hash<S>()(s) == std::hash<SV>()(SV(s))。 (C++17 起)...
std::hash<std::vector<bool>> From cppreference.com Defined in header<vector> template<classAllocator> structhash<std::vector<bool, Allocator>>; (since C++11) The template specialization ofstd::hashforstd::vector<bool>allows users to obtain hashes of objects of typestd::vector<bool>. ...
std::unordered_set<Key,Hash,KeyEqual,Allocator>:: C++ Containers library std::unordered_set node_type extract(const_iterator position); (1)(since C++17) node_type extract(constKey&k); (2)(since C++17) template<classK> node_type extract(K&&x);...
Function objects−hash(C++11) Swap−Type operations(C++11) Integer comparison(C++20) pair−tuple(C++11) optional(C++17) expected(C++23) variant(C++17)−any(C++17) bitset−Bit manipulation(C++20) Containers library vector−deque−array(C++11) ...
std::hash<std::bitset> (C++11) hash support forstd::bitset (class template specialization) Notes If the size of a bit-set is not known at compile time, or it is necessary to change its size at run-time, the dynamic types such asstd::vector<bool>orboost::dynamic_bitset<>may be use...
外部リンク−非ANSI/ISOライブラリ−std名前空間のシンボルの索引 C言語リファレンス C89, C95, C99, C11, C17 言語 基本概念 キーワード プリプロセッサ 式 宣言 初期化 関数 文 ヘッダ 型サポート プログラムユーティリティ
Function objects − hash (C++11) Swap − Type operations (C++11) Integer comparison (C++20) pair − tuple (C++11) optional (C++17) expected (C++23) variant (C++17) − any (C++17) bitset − Bit manipulation (C++20) Containers library vector − deque − array (C++11) list ...
std::hash<std::string> std::hash<std::u16string> std::hash<std::u32string> std::hash<std::wstring> (C++11) (C++11) (C++11) (C++11) Hash-Unterstützung für Strings Original: hash support for strings The text has been machine-translated viaGoogle Translate. ...
Function objects−hash(C++11) Swap−Type operations(C++11) Integer comparison(C++20) pair−tuple(C++11) optional(C++17) expected(C++23) variant(C++17)−any(C++17) bitset−Bit manipulation(C++20) Containers library vector−deque−array(C++11) ...