std::auto_ptr<T>::operator=
auto_ptr& operator=( auto_ptr& r ) throw(); |
(1) | (deprecated in C++11) (removed in C++17) |
template< class Y > auto_ptr& operator=( auto_ptr<Y>& r ) throw(); |
(2) | (deprecated in C++11) (removed in C++17) |
auto_ptr& operator=( auto_ptr_ref m ) throw(); |
(3) | (deprecated in C++11) (removed in C++17) |
Replaces the managed object with the one managed by r
.
reset(r.release())
.
reset(r.release())
.
Y*
must be implicitly convertible to
T*
.
reset(m.release())
.
auto_ptr_ref
is an implementation-defined type that holds a reference to
auto_ptr
.
std::auto_ptr
is implicitly
convertible to and
from this type. The implementation is allowed to provide the template with a different name or implement equivalent functionality in other ways.
Parameters
r | - | another auto_ptr to transfer the ownership of the object from |
m | - | an implementation-defined type that holds a reference to auto_ptr |
Return value
*this
.
Notes
The constructor and the copy assignment operator from auto_ptr_ref
is provided to allow copy-constructing and assigning std::auto_ptr
from nameless temporaries. Since its copy constructor and copy assignment operator take the argument as non-const reference, they cannot bind rvalue arguments directly. However, a user-defined conversion can be executed (which releases the original auto_ptr), followed by a call to the constructor or copy-assignment operator that take auto_ptr_ref
by value. This is an early implementation of move semantics.
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