std::auto_ptr::auto_ptr
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                    |   explicit auto_ptr( X* p = 0 ); 
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(1) | (deprecated) | 
|   auto_ptr( auto_ptr& r ); 
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(2) | (deprecated) | 
|   template< class Y > 
auto_ptr( auto_ptr<Y>& r );  | 
(3) | (deprecated) | 
|   template< class Y > 
auto_ptr( auto_ptr_ref<X> m );  | 
(3) | (deprecated) | 
Constructs the auto_ptr from a pointer that refers to the object to manage.
1) Constructs the 
auto_ptr with pointer p.
2) Constructs the 
auto_ptr with the pointer held in r. r.release() is called to acquire the ownership of the object.
3) Same as (2). Y* must be implicitly convertible to T*.
4) Constructs the 
auto_ptr with the pointer held in the auto_ptr instance referred to by m. p.release() is called for the auto_ptr p that m holds to acquire the ownership of the object. auto_ptr_ref is an implementation-defined type that holds a reference to auto_ptr. The implementation is allowed to provide the template with a different name or implement equivalent functionality in other ways.[edit] Parameters
| p | - | a pointer to an object to manage | 
| r | - |   another auto_ptr to transfer the ownership of the object from
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| m | - |   an implementation-defined type that holds a reference to auto_ptr
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[edit] Exceptions
(none)