[Boost-bugs] [Boost C++ Libraries] #2836: Request boost::optional<T>::optional_assign_to, optional_move_to, optional_swap

Subject: [Boost-bugs] [Boost C++ Libraries] #2836: Request boost::optional<T>::optional_assign_to, optional_move_to, optional_swap
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-03-07 11:25:11

#2836: Request boost::optional<T>::optional_assign_to, optional_move_to,
optional_swap
-------------------------------------+--------------------------------------
 Reporter:  aschoedl_at_[hidden]  |       Owner:  nielsdekker 
     Type:  Feature Requests         |      Status:  new         
Milestone:  Boost 1.39.0             |   Component:  optional    
  Version:  Boost 1.38.0             |    Severity:  Optimization
 Keywords:  optional assign          |  
-------------------------------------+--------------------------------------
 I request the three member functions

 template< class U > bool boost::optional<T>::optional_assign_to(U& t)
 const;
 template< class U > bool boost::optional<T>::optional_move_to(U& t);
 bool boost::optional<T>::optional_swap(T& t);

 which, if !*this, return false, and otherwise return true and are
 equivalent to

 t=**this;
 t=**this; and *this may have any value after the move
 std::swap( t, **this );

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/2836>
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