list::insert

Inserts an element or a number of elements or a range of elements into a list at a specified position.

iterator insert( 
   const_iterator _Where, 
   const Type& _Val 
);
iterator insert(
   const_iterator _Where,
   Type&& _Val
);
void insert( 
   iterator _Where, 
   size_type _Count, 
   const Type& _Val 
); 
template<class InputIterator> 
   void insert( 
      iterator _Where, 
      InputIterator _First, 
      InputIterator _Last 
   );

Parameters

Return Value

The first two insert functions return an iterator that points to the position where the new element was inserted into the list.

Example

// list_class_insert.cpp
// compile with: /EHsc
#include <list>
#include <iostream>
#include <string>

int main( ) 
{
   using namespace std;
   list <int> c1, c2;
   list <int>::iterator Iter;
   
   c1.push_back( 10 );
   c1.push_back( 20 );
   c1.push_back( 30 );
   c2.push_back( 40 );
   c2.push_back( 50 );
   c2.push_back( 60 );

   cout << "c1 =";
   for ( Iter = c1.begin( ); Iter != c1.end( ); Iter++ )
      cout << " " << *Iter;
   cout << endl;

   Iter = c1.begin( );
   Iter++;
   c1.insert( Iter, 100 );
   cout << "c1 =";
   for ( Iter = c1.begin( ); Iter != c1.end( ); Iter++ )
      cout << " " << *Iter;
   cout << endl;

   Iter = c1.begin( );
   Iter++;
   Iter++;
   c1.insert( Iter, 2, 200 );

   cout << "c1 =";
   for ( Iter = c1.begin( ); Iter != c1.end( ); Iter++ )
      cout << " " << *Iter;
   cout << endl;

   c1.insert( ++c1.begin( ), c2.begin( ),--c2.end( ) );

   cout << "c1 =";
   for ( Iter = c1.begin( ); Iter != c1.end( ); Iter++ )
      cout << " " << *Iter;
   cout << endl;

// initialize a list of strings by moving
   list < string > c2;
   string str("a");

   c2.insert( c2.begin(), move( str ) );
   cout << "Moved first element: " << c2.front( ) << endl;
}

Output

c1 = 10 20 30
c1 = 10 100 20 30
c1 = 10 100 200 200 20 30
c1 = 10 40 50 100 200 200 20 30
Moved first element: a

Requirements

Header: <list>

Namespace: std

See Also

Reference

list Class

list::insert (STL Samples)

Standard Template Library