C++/List/list assign

Add data by assign

<source lang="cpp">

1. include <list>
2. include <iostream>

using namespace std; typedef list<int> LISTINT; int main(void) {

   LISTINT listOne;
   LISTINT listAnother;
   LISTINT::iterator i;
   // Add some data
   listOne.push_front (2);
   listOne.push_front (1);
   listOne.push_back (3);
   listAnother.push_front(4);
   listAnother.assign(listOne.begin(), listOne.end());
   for (i = listAnother.begin(); i != listAnother.end(); ++i)
       cout << *i << " ";
   cout << endl;
   listAnother.assign(4, 1);
   for (i = listAnother.begin(); i != listAnother.end(); ++i)
       cout << *i << " ";
   cout << endl;
   listAnother.erase(listAnother.begin());

}

 </source>

Use list.assign to replace contents of a list with elements of another list

<source lang="cpp">

1. include <iostream>

using std::cout; using std::endl;

1. include <list> // list class-template definition
2. include <algorithm> // copy algorithm
3. include <iterator> // ostream_iterator

int main() {

  int array[ 4 ] = { 2, 6, 4, 8 };
  std::list< int > values;      // create list of ints
  std::list< int > otherValues; // create list of ints
  std::ostream_iterator< int > output( cout, " " );
  // insert items in values
  values.push_front( 1 );
  values.push_front( 3 );
  values.push_back( 4 );
  values.push_back( 2 );
  cout << "values contains: ";
  std::copy( values.begin(), values.end(), output );
  otherValues.insert( otherValues.begin(), array, array + 4 );
  cout << "\n\notherValues contains: ";
  std::copy( otherValues.begin(), otherValues.end(), output );

  values.assign( otherValues.begin(), otherValues.end() );
  cout << "\n\nvalues contains: ";
  std::copy( values.begin(), values.end(), output );
  cout << endl;
  return 0;

} /* values contains: 3 1 4 2 otherValues contains: 2 6 4 8 values contains: 2 6 4 8

*/
       
   
 </source>