std::multimap<Key,T,Compare,Allocator>::size - cppreference.com (original) (raw)

| size_type size() const; | | (noexcept since C++11) (constexpr since C++26) | | ------------------------ | | ---------------------------------------------- |

Returns the number of elements in the container.

[edit] Return value

std::distance(begin(), end())

[edit] Complexity

Constant.

[edit] Example

#include #include   int main() { std::multimap<int, char> nums{{1, 'a'}, {1, 'b'}, {2, 'c'}, {2, 'd'}}; assert(nums.size() == 4); }

[edit] See also

| | checks whether the container is empty (public member function) [edit] | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | | returns the maximum possible number of elements (public member function) [edit] | | | returns the size of a container or array (function template) [edit] |