unordered_map::bucket_size
Ruft die Größe eines Buckets ab
size_type bucket_size(size_type nbucket) const;
Parameter
- nbucket
Die Bucketzahl.
Hinweise
Die Memberfunktionen gibt die Größe der Bucketzahl nbucket zurück.
Beispiel
// std_tr1__unordered_map__unordered_map_bucket_size.cpp
// compile with: /EHsc
#include <unordered_map>
#include <iostream>
typedef std::unordered_map<char, int> Mymap;
int main()
{
Mymap c1;
c1.insert(Mymap::value_type('a', 1));
c1.insert(Mymap::value_type('b', 2));
c1.insert(Mymap::value_type('c', 3));
// display contents " [c 3] [b 2] [a 1]"
for (Mymap::const_iterator it = c1.begin();
it != c1.end(); ++it)
std::cout << " [" << it->first << ", " << it->second << "]";
std::cout << std::endl;
// display buckets for keys
Mymap::size_type bs = c1.bucket('a');
std::cout << "bucket('a') == " << bs << std::endl;
std::cout << "bucket_size(" << bs << ") == " << c1.bucket_size(bs)
<< std::endl;
return (0);
}
Anforderungen
Header: <unordered_map>
Namespace: std