| vector::clear |
public member function |
Clear content
All the elements of the vector are dropped: their destructors are called, and then they are removed from the vector container, leaving the container with a size of 0.
Parameters
none
Return value
none
Example
// clearing vectors
#include <iostream>
#include <vector>
using namespace std;
int main ()
{
unsigned int i;
vector<int> myvector;
myvector.push_back (100);
myvector.push_back (200);
myvector.push_back (300);
cout << "myvector contains:";
for (i=0; i<myvector.size(); i++) cout << " " << myvector[i];
myvector.clear();
myvector.push_back (1101);
myvector.push_back (2202);
cout << "\nmyvector contains:";
for (i=0; i<myvector.size(); i++) cout << " " << myvector[i];
cout << endl;
return 0;
}
|
Output:
myvector contains: 100 200 300
myvector contains: 1101 2202
|
Complexity
Linear on size (destructors).
See also
| vector::empty | Test whether vector is empty (public member function) |
