From: "Richard P. Groenewegen" <rpg@...2all.net>
Date: 2004-10-25T06:51:21+09:00
Subject: "add" function in swig and the ruby GC?

Hi,

I'm trying to write an add-function in C++ with swig, but I think that
ruby does not Garbage collect my objects.  Example:

class Thingy {
    public:
        Thingy() { }
        ~Thingy() { cout << "Thingy is destructed."; }

        Thingy *add(const Thingy *other) const {
            Thingy *result = new Thingy();
            // ...
            return result;
        }
}

Using GC.start I can check that ruby does not destruct Thingies made
with "add".  So, what is the correct way to do this?  I could return a
Thingy instead of a Thingy*, but is this the preferred(TM) way?

best regards,
Richard