CObList::RemoveHead

Статья
10/16/2008

Removes the element from the head of the list and returns a pointer to it.

CObject* RemoveHead( );

Возвращаемое значение

The CObject pointer previously at the head of the list.

Заметки

You must ensure that the list is not empty before calling RemoveHead. If the list is empty, then the Debug version of the Microsoft Foundation Class Library asserts. Use IsEmpty to verify that the list contains elements.

The following table shows other member functions that are similar to CObList::RemoveHead.

Class	Member Function
CPtrList	*void RemoveHead( );**
CStringList	CString RemoveHead( );

Пример

See CObList::CObList for a listing of the CAge class.

CObList list;
CAge* pa1;
CAge* pa2;

list.AddHead(pa1 = new CAge(21));
list.AddHead(pa2 = new CAge(40)); // List now contains (40, 21).
ASSERT(*(CAge*) list.RemoveHead() == CAge(40));  // Old head
ASSERT(*(CAge*) list.GetHead() == CAge(21));  // New head
delete pa1;
delete pa2;