Re: [Boost-users] [smart_ptr]why scoped_ptr c ann't used in this case, yet shared_ptr ca n

From: Markus Schöpflin (markus.schoepflin_at_[hidden])
Date: 2007-07-13 05:02:57

hongleij_at_[hidden] wrote:

[...]

> /// why boost::shared_ptr can used to Minimize compilation dependencies between files,
> yet boost::scoped_ptr cannot.   I needn't to use reference cout.may someboby help me out of the trouble.thanks!

scoped_ptr can be used like you want. From the smart_ptr 
documentation: 'Note that scoped_ptr requires that T be a complete 
type at destruction time, but shared_ptr does not.'

IOW, you need to define a possible empty destructor of your class in a 
source file, and only there the complete type of T must be available.

See the example referenced in 
http://boost.org/libs/smart_ptr/scoped_ptr.htm, section 'Handle/Body 
Idiom'.

HTH, Markus