allocator::pointer

提供一个指向对象的类型由该赋值程序管理的。

typedef value_type *pointer;

备注

指针类型描述可通过该表达式 *ptr指定，时，所有对象模板选件类分配器对象可以分配的对象 ptr。

示例

// allocator_ptr.cpp
// compile with: /EHsc
#include <memory>
#include <iostream>
#include <vector>

using namespace std;

int main( ) 
{
   vector <int> v1;
   vector <int>::iterator v1Iter;
   vector <int>:: allocator_type v1Alloc;

   int i;
   for ( i = 1 ; i <= 7 ; i++ )
   {
      v1.push_back( 3 * i );
   }

   cout << "The original vector v1 is:\n ( " ;
   for ( v1Iter = v1.begin( ) ; v1Iter != v1.end( ) ; v1Iter++ )
      cout << *v1Iter << " ";
   cout << ")." << endl;

   allocator<int>::const_pointer v1Ptr;
   const int k = 12;
   v1Ptr = v1Alloc.address( k );

   cout << "The integer addressed by v1Ptr has a value of: "
        << "*v1Ptr = " << *v1Ptr << "." << endl;   
}

要求

标头: <memory>

命名空间: std

请参见

参考

allocator Class