Re: [boost] py_cpp and vector<..>::const_iterator

From: Ullrich Koethe (koethe_at_[hidden])
Date: 2000-11-29 18:42:55

Anton Gluck wrote:
> 
> Just one more question: Did you add the auxiliary class and the magic in
> my_module.def_cursor_for(), or is this part of py_cpp/boost already? If
> so, how did you know (I'd like to acquire some of _your_ magic :-)? If
> not, will I be able to try this with the code you provided here, or does
> this require an update of py_cpp?
> 

The cursor feature didn't make it into the BPL release version because I
invented it after the deadline :-( For now, you can work with the code I
provided in the previous posting, but you will have to emulate the
effect of "def_cursor_for()" manually. Here is what you need to do:

    cursor<FooList> FooList_get_cursor(FooList const & foo_list)
    {
       return cursor<FooList>(const_cast<FooList &>(foo_list));
    }

    boost::python::class_builder<FooList> 
        foolist_class(my_module, "FooList");        

    foolist_class.def(&FooList_get_cursor, "cursor");
    ...// other FooList methods

    boost::python::class_builder<cursor<FooList> > 
        foolist_cursor_class(my_module, "FooList_cursor");

    foolist_cursor_class.def(&cursor<FooList>::get_item, "__getitem__");
    foolist_cursor_class.def(&cursor<FooList>::set_item, "__setitem__");
    foolist_cursor_class.def(&cursor<FooList>::len, "__len__");

That's all my magic.

Viel Spass
Ulli

-- 
 ________________________________________________________________
|                                                                |
| Ullrich Koethe  Universität Hamburg / University of Hamburg    |
|                 FB Informatik / Dept. of Computer Science      |
|                 AB Kognitive Systeme / Cognitive Systems Group |
|                                                                |
| Phone: [phone]                Vogt-Koelln-Str. 30 |
| Fax:   [phone]                D - 22527 Hamburg   |
| Email: u.koethe_at_[hidden]               Germany             |
|        koethe_at_[hidden]                        |
| WWW:   http://kogs-www.informatik.uni-hamburg.de/~koethe/      |
|________________________________________________________________|