[boost] Re: how do I release shared_ptr ?

From: Angus Leeming (angus.leeming_at_[hidden])
Date: 2004-01-08 13:39:13

David Abrahams wrote:
> Will your code work just as well if unique changed to:
> 
>     bool unique() const // nothrow
>     {
>         return weak_count() == 1;
>     }

I believe so, yes, because I store shared_ptr copies of the cached 
item:

        /** Get the cache item associated with file.
         *  Returns an empty container if there is no such item.
         *
         *  IMPORTANT: whatever uses an image must make a local 
         *  copy of this ItemPtr.
         *  The boost::shared_ptr<>::use_count() function is
         *  used to ascertain whether or not to remove the item
         * from the cache when remove(file) is called.
         *
         *  You have been warned!
         */
        typedef boost::shared_ptr<CacheItem> ItemPtr;
        ItemPtr const item(std::string const & file) const;

The app in question does not use weak_ptr at all (anymore).

Regards,
Angus