Javier Jerónimo wrote:

Hello,

I have:

std::set< boost::shared_ptr< A > > m_set;

and when I try to do:

m_set.erase( somesharedptr );

the shared_ptr is not removed from the set. There is already a shared_ptr object pointing to the same A object inside the set. I think it's because the definition of "shared_ptr<>::operator<" and its use in std::set<>::erase.

What's the correct way of using a shared_ptr inside a set? You will need to provide a less than predicate to the std::set that looks through the shared pointer to its pointee value. You need that anyway if you want the set to be a set of pointee values rather than a set of shared pointers.

The less than operator for shared_ptr compares the address of the pointee, not its value.

Thanks.

Bill Somerville