std::hash (std::bitset)
Aus cppreference.com
 |
This page has been machine-translated from the English version of the wiki using Google Translate.
The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here. |
| template<size_t N> struct hash<bitset<N>>; |
(seit C++11) | |
Die Vorlage Spezialisierung std::hash für std::bitset<N> ermöglicht es Benutzern, Hashes von Objekten des Typs std::bitset<N> zu erhalten .
Original:
The template specialization of std::hash for std::bitset<N> allows users to obtain hashes of objects of type std::bitset<N>.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
[Bearbeiten] Beispiel
Der folgende Code zeigt eine mögliche Ausgabe einer Hash-Funktion auf mehrere BitSets verwendet:
Original:
The following code shows one possible output of a hash function used on several bitsets:
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
#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
[Bearbeiten] Siehe auch
| (C++11) |
Funktionsobjekt zur Erzeugung von Hashwerten (Klassen-Template) |
