multiset::empty


public member function
bool empty ( ) const;

Test whether container is empty

Returns whether the multiset container is empty, i.e. whether its size is 0.

This function does not modify the content of the container in any way. To clear its content, use member clear.

Parameters

none

Return Value

true if the container size is 0, false otherwise.

Example

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// multiset::empty
#include <iostream>
#include <set>
using namespace std;

int main ()
{
  multiset<int> mymultiset;

  mymultiset.insert(10);
  mymultiset.insert(20);
  mymultiset.insert(10);

  cout << "mymultiset contains:";
  while (!mymultiset.empty())
  {
     cout << " " << *mymultiset.begin();
     mymultiset.erase(mymultiset.begin());
  }
  cout << endl;

  return 0;
}


Output:
mymultiset contains: 10 10 20


Complexity

Constant.

See also

multiset::clear Clear content (public member function)
multiset::erase Erase elements (public member function)
multiset::size Return container size (public member function)