front_insert_iterator::front_insert_iterator

建立可將項目插入至指定的容器物件的最上層的 Iterator。

explicit front_insert_iterator(
   Container& _Cont
);

參數

• _Cont
  front_insert_iterator 是插入項目的容器物件。

傳回值

參數容器物件的 front_insert_iterator 。

範例

// front_insert_iterator_front_insert_iterator.cpp
// compile with: /EHsc
#include <iterator>
#include <list>
#include <iostream>

int main( )
{
   using namespace std;
   int i;
   list <int>::iterator L_Iter;

   list<int> L;
   for (i = -1 ; i < 9 ; ++i )  
   {
      L.push_back ( 2 * i );
   }

   cout << "The list L is:\n ( ";
   for ( L_Iter = L.begin( ) ; L_Iter != L.end( ); L_Iter++)
      cout << *L_Iter << " ";
   cout << ")." << endl;

   // Using the member function to insert an element
   front_inserter ( L ) = 20;

   // Alternatively, one may use the template function
   front_insert_iterator< list < int> > Iter(L);
   *Iter = 30;

   cout << "After the front insertions, the list L is:\n ( ";
   for ( L_Iter = L.begin( ) ; L_Iter != L.end( ); L_Iter++)
      cout << *L_Iter << " ";
   cout << ")." << endl;
}

需求

標題: <iterator>

命名空間: std

請參閱

參考

front_insert_iterator Class

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