public member function
<unordered_map>

std::unordered_multimap::size

size_type size() const noexcept;
Return container size
Returns the number of elements in the unordered_multimap container.

Parameters

none

Return Value

The number of elements in the container.

Member type size_type is an unsigned integral type.

Example

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// unordered_multimap::size
#include <iostream>
#include <string>
#include <unordered_map>

int main ()
{
  std::unordered_multimap<std::string,std::string> myumm = {
       {"Smith","Pharmacy"},
       {"Jones","Library"},
       {"Dole","Church"},
       {"Smith","Office"}
  };

  std::cout << "myumm.size() is " << myumm.size() << std::endl;

  return 0;
}

Output:
myumm.size() is 4


Complexity

Constant.

Iterator validity

No changes.

See also