-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Wednesday 16 April 2008 15:46 pm, Daniel Frey wrote:
The problem can be solved by either extending or modifying the interface: When we add the following method(s):
template< typename U > shared_ptr<U> shared_from_this( U* u );
template< typename U > shared_ptr<U const> shared_from_this( U const* u );
it's then possible for a method of T to call shared_from_this(this) instead of shared_from_this() to gain a shared_ptr<T>.
Additionally, the interface is generally useful, as it could be called with other pointers, e.g. to sub-objects (member variables) of T. It's IMHO a nice match to the shared_ptr-constructor which takes a shared_ptr and an additional plain pointer.
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. - -- Frank -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFIBmyj5vihyNWuA4URAs0ZAJ466WCMmJ5EZz98n8su/1+IYJ4MyACeOtMg ExRZ6AWIn6SQHOmfDAWjnV8= =gKNc -----END PGP SIGNATURE-----