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Returns the bucket number where the elements with value k is located.
A bucket is a slot in the container's internal hash table to which elements are assigned based on their hash value. Elements with the same value are located in the same bucket. Buckets are numbered from 0 to (bucket_count-1).
Individual elements in a bucket can be accessed by means of the range iterators returned by unordered_multiset::begin and unordered_multiset::end.
Member type size_type is an unsigned integral type.
Possible output:
Reference
C library:
- <cassert> (assert.h)
- <cctype> (ctype.h)
- <cerrno> (errno.h)
-
<cfenv> (fenv.h)C++11
- <cfloat> (float.h)
-
<cinttypes> (inttypes.h)C++11
- <ciso646> (iso646.h)
- <climits> (limits.h)
- <clocale> (locale.h)
- <cmath> (math.h)
- <csetjmp> (setjmp.h)
- <csignal> (signal.h)
- <cstdarg> (stdarg.h)
-
<cstdbool> (stdbool.h)C++11
- <cstddef> (stddef.h)
-
<cstdint> (stdint.h)C++11
- <cstdio> (stdio.h)
- <cstdlib> (stdlib.h)
- <cstring> (string.h)
-
<ctgmath> (tgmath.h)C++11
- <ctime> (time.h)
-
<cuchar> (uchar.h)C++11
- <cwchar> (wchar.h)
- <cwctype> (wctype.h)
Containers:
-
<array>C++11
- <deque>
-
<forward_list>C++11
- <list>
- <map>
- <queue>
- <set>
- <stack>
-
<unordered_map>C++11
-
<unordered_set>C++11
- <vector>
-
Input/Output:
Multi-threading:
-
<atomic>C++11
-
<condition_variable>C++11
-
<future>C++11
-
<mutex>C++11
-
<thread>C++11
-
Other:
- <algorithm>
- <bitset>
-
<chrono>C++11
-
<codecvt>C++11
- <complex>
- <exception>
- <functional>
-
<initializer_list>C++11
- <iterator>
- <limits>
- <locale>
- <memory>
- <new>
- <numeric>
-
<random>C++11
-
<ratio>C++11
-
<regex>C++11
- <stdexcept>
- <string>
-
<system_error>C++11
-
<tuple>C++11
-
<type_traits>C++11
-
<typeindex>C++11
- <typeinfo>
- <utility>
- <valarray>
<unordered_set>
-
unordered_multisetC++11
-
unordered_setC++11
unordered_multiset
-
unordered_multiset::~unordered_multisetC++11
-
unordered_multiset::unordered_multisetC++11
member functions
-
unordered_multiset::beginC++11
-
unordered_multiset::bucketC++11
-
unordered_multiset::bucket_countC++11
-
unordered_multiset::bucket_sizeC++11
-
unordered_multiset::cbeginC++11
-
unordered_multiset::cendC++11
-
unordered_multiset::clearC++11
-
unordered_multiset::countC++11
-
unordered_multiset::emplaceC++11
-
unordered_multiset::emplace_hintC++11
-
unordered_multiset::emptyC++11
-
unordered_multiset::endC++11
-
unordered_multiset::equal_rangeC++11
-
unordered_multiset::eraseC++11
-
unordered_multiset::findC++11
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unordered_multiset::get_allocatorC++11
-
unordered_multiset::hash_functionC++11
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unordered_multiset::insertC++11
-
unordered_multiset::key_eqC++11
-
unordered_multiset::load_factorC++11
-
unordered_multiset::max_bucket_countC++11
-
unordered_multiset::max_load_factorC++11
-
unordered_multiset::max_sizeC++11
-
unordered_multiset::operator=C++11
-
unordered_multiset::rehashC++11
-
unordered_multiset::reserveC++11
-
unordered_multiset::sizeC++11
-
unordered_multiset::swapC++11
-
non-member overloads
public member function
<unordered_set>
std::unordered_multiset::bucket
size_type bucket ( const key_type& k ) const;
Locate element's bucket
A bucket is a slot in the container's internal hash table to which elements are assigned based on their hash value. Elements with the same value are located in the same bucket. Buckets are numbered from 0 to (bucket_count-1).
Individual elements in a bucket can be accessed by means of the range iterators returned by unordered_multiset::begin and unordered_multiset::end.
Parameters
- k
- Value whose bucket is to be located.
Member type key_type is the type of the elements in the container. In unordered_set containers it is the same as value_type, defined as an alias of the class's first template parameter (Key).
Return value
The order number of the bucket corresponding to k.Member type size_type is an unsigned integral type.
Example
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|
Possible output:
ice is in bucket #0 sand is in bucket #2 water is in bucket #4 water is in bucket #4 |
Complexity
Constant.Iterator validity
No changes.See also
- unordered_multiset::find
- Get iterator to element (public member function)
- unordered_multiset::bucket_size
- Return bucket size (public member type)
- unordered_multiset::bucket_count
- Return number of buckets (public member function)
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Spotted an error? contact us