std::hash (std::bitset)
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| template<size_t N> struct hash<bitset<N>>; |
（C++11 起） | |
std::hash为模板专门std::bitset<N>允许用户获取哈希的对象的类型std::bitset<N>.
Original:
The template specialization of std::hash for std::bitset<N> allows users to obtain hashes of objects of type std::bitset<N>.
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[编辑] 为例
下面的代码显示了一种可能的哈希函数的输出上使用数位集
Original:
The following code shows one possible output of a hash function used on several bitsets:
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#include <iostream> #include <bitset> #include <functional> int main() { std::bitset<4> b1(1); std::bitset<4> b2(2); std::bitset<4> b3(b2); std::hash<std::bitset<4>> hash_fn; size_t h1 = hash_fn(b1); size_t h2 = hash_fn(b2); size_t h3 = hash_fn(b3); std::cout << h1 << '\n'; std::cout << h2 << '\n'; std::cout << h3 << '\n'; }
Output:
67918732 118251589 118251589
[编辑] 另请参阅
| （C++11） |
hash function object （类模板） |
