Re: [boost] [smart_ptr] enable_shared_from_this::shared_from_this( this );

17 Apr 2008


      On Wed, 2008-04-16 at 17:16 -0400, Frank Mori Hess wrote:
...
...
Daniel Frey:
    template< typename U >
    shared_ptr<U> shared_from_this( U* u );
template< typename U >
    shared_ptr<U const> shared_from_this( U const* u );
...
Wouldn't it be safer to make it a non-template?  The aliasing constructor can 
be easily misused.  If the user really wants to use the aliasing constructor, 
they could always pass the return value from shared_from_this() to the 
aliasing constructor.
In which case it is useless, as it cannot accept "this" and therefore
doesn't solve any problem at all. Passing this allows you to pass the
type of "this", which is the derived type T, not the type of
enable_shared_from_this<T>.

Regards, Daniel