vector_pro::clear

C++

void clear() noexcept;

Return const_iterator to beginning

Removes all elements from the vector (after destroyed), leaving the container with a size of 0.

Parameters

none

Return value

none

Example

C++

// clearing vectors
#include <iostream>
#include "vector_pro.h"

/**
 * Output:
 * myvector contains: 100 200 300
 * myvector contains: 1101 2202
 */

int main ()
{
  vector_pro<int> myvector;
  myvector.push_back (100);
  myvector.push_back (200);
  myvector.push_back (300);

  std::cout << "myvector contains:";
  for (unsigned i=0; i<myvector.size(); i++)
    std::cout << ' ' << myvector[i];
  std::cout << '\n';

  myvector.clear();
  myvector.push_back (1101);
  myvector.push_back (2202);

  std::cout << "myvector contains:";
  for (unsigned i=0; i<myvector.size(); i++)
    std::cout << ' ' << myvector[i];
  std::cout << '\n';

  return 0;
}

Complexity

Linear in size (destructions).