auto_ptr::release

The member replaces the stored pointer myptr with a null pointer and returns the previously stored pointer.

Type *release( ) throw( );

Return Value

The previously stored pointer.

Remarks

The member replaces the stored pointer myptr with a null pointer and returns the previously stored pointer.

Example

// auto_ptr_release.cpp
// compile with: /EHsc
#include <memory>
#include <iostream>
#include <vector>
using namespace std;

class Int 
{
public:
   Int( int i ) 
   {
      x = i;
      cout << "Constructing " << ( void* )this << " Value: " << x << endl; 
   };
   ~Int( ) {
      cout << "Destructing " << ( void* )this << " Value: " << x << endl; 
   };

   int x;

};

int main( ) 
{
   auto_ptr<Int> pi ( new Int( 5 ) );
   pi.reset( new Int( 6 ) );
   Int* pi2 = pi.get ( );
   Int* pi3 = pi.release ( );
   if ( pi2 == pi3 )
      cout << "pi2 == pi3" << endl;
   delete pi3;
}

Constructing 00311AF8 Value: 5
Constructing 00311B88 Value: 6
Destructing 00311AF8 Value: 5
pi2 == pi3
Destructing 00311B88 Value: 6

Requirements

Header: <memory>

Namespace: std

See Also

Concepts

auto_ptr Class

auto_ptr Members