std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::size (3) - Linux Manuals
std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::size: std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::size
Command to display std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::size
manual in Linux: $ man 3 std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::size
NAME
std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::size - std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::size
Synopsis
size_type size() const noexcept; (since C++11)
Returns the number of elements in the container, i.e. std::distance(begin(), end()).
Parameters
(none)
Return value
The number of elements in the container.
Complexity
Constant.
Example
The following code uses size to display the number of elements in a std::unordered_multimap:
// Run this code
#include <unordered_map>
#include <iostream>
int main()
{
std::unordered_multimap<int,char> nums {{1, 'a'}, {3, 'b'}, {5, 'c'}, {7, 'd'}};
std::cout << "nums contains " << nums.size() << " elements.\n";
}
Output:
nums contains 4 elements.
See also
checks whether the container is empty
empty (public member function)
returns the maximum possible number of elements
max_size (public member function)
Pages related to std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::size
- std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::swap (3) - std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::swap
- std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::begin(size_type), (3) - std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::begin(size_type),
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- std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::count (3) - std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::count
- std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::emplace (3) - std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::emplace
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- std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::hash_function (3) - std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::hash_function
- std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::insert (3) - std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::insert
- std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::key_eq (3) - std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::key_eq
- std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::load_factor (3) - std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::load_factor
- std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::max_bucket_count (3) - std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::max_bucket_count
- std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::max_load_factor (3) - std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::max_load_factor
- std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::max_size (3) - std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::max_size
- std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::merge (3) - std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::merge
- std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::operator= (3) - std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::operator=
- std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::rehash (3) - std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::rehash
- std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::reserve (3) - std::unordered_multimap<Key,T,Hash,KeyEqual,Allocator>::reserve
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