public member function

std::multiset::clear

<set>
void clear ( );
Clear content
All the elements in the container are dropped: their destructors are called, and they are removed from the container, leaving it with a size of 0.

Parameters

none

Return value

none

Example

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

int main ()
{
  multiset<int> mymultiset;
  multiset<int>::iterator it;

  mymultiset.insert (11);
  mymultiset.insert (42);
  mymultiset.insert (11);

  cout << "mymultiset contains:";
  for (it=mymultiset.begin(); it!=mymultiset.end(); ++it)
    cout << " " << *it;

  mymultiset.clear();
  mymultiset.insert (200);
  mymultiset.insert (100);

  cout << "\nmymultiset contains:";
  for (it=mymultiset.begin(); it!=mymultiset.end(); ++it)
    cout << " " << *it;

  cout << endl;

  return 0;
}


Output:
mymultiset contains: 11 11 42
myset contains: 100 200

Complexity

Linear in size (destructors).

See also

multiset::erase
Erase elements (public member function)
multiset::size
Return container size (public member function)
multiset::empty
Test whether container is empty (public member function)

C++