[C++-sig] Extracting inherited class instances

[Furkan Kuru]

yes, thanks
check will solve my problem.


On 9/12/07, Johann Borck <johann.borck at densedata.com> wrote:
>
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> Furkan Kuru wrote:
> > Hello,
> >
> > I have a class exposed to python and extract it like this; ..
> >
> > int
> >
> > len=boost::python::len(xList); for(int i=0;i<len;i++) {
> >
> > boost::python::object cur = xList.pop();
> >
> > try {
> >
> > Y& xins = boost::python::extract<Y&> (cur);
> >
> > YHandler(Y);
> >
> > }
> >
> > catch(...) {
> >
>
> Is there a reason  why you don't use check()?
> like
>       bp::extract<Y&> x (cur);
>       if (x.check()){ YHandler(x()); }
>
> it at least seems to reduce the ugliness of the nested structure.
>
> Johann
>
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-- 
Furkan Kuru
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