std::hash (std::bitset)
template<size_t N> struct hash<bitset<N>>; |
(since C++11) | |
The template specialization of std::hash for std::bitset<N> allows users to obtain hashes of objects of type std::bitset<N>.
Example
The following code shows one possible output of a hash function used on several bitsets:
Run this code
#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
See also
(C++11) |
hash function object (class template) |