Re: [Boost-users] [python] raw pointer data members

Subject: Re: [Boost-users] [python] raw pointer data members
From: OvermindDL1 (overminddl1_at_[hidden])
Date: 2009-08-17 20:40:27

On Mon, Aug 17, 2009 at 10:53 AM, Igor
Mikushkin<igor.mikushkin_at_[hidden]> wrote:
> Hello Boosters,
>
> I'm trying to use Boost Python that way:
>
>   template<class Key>
>   struct Node
>   {
>      Node(Key key): key(key) {}
>      Node* parent;
>      Node* left;
>      Node* right;
>      Key key;
>   };
>
> .....
>
>  BOOST_PYTHON_MODULE(tree)
>   {
>      class_<Node>("Node", init<int>())
>         .def_readwrite("parent", &Node::parent)
>         .def_readwrite("left",   &Node::left)
>         .def_readwrite("right",  &Node::right)
>         .def_readwrite("key",    &Node::key);
>   };
>
> But then I can't use parent, left and right properties in Python code.
> Is there a way to convert these raw pointers to common object
> reference in Python?

I do not know what the 'proper' way is, but any time I had that issue
I either changed all Node* to shared_ptr<Node> if I had access to
change the class, or I added wrapper set/get functions if I did not.