CGAL users discussion list

["Laurent Rineau (GeometryFactory)" <>]

Le jeudi 10 juin 2010 19:10:29, Costas Tsirogiannis a écrit :
> > Well, this time it probably means that you are compiling with an old
> 
> version
> 
> > of CGAL, Which CGAL version are you using?
> 
> 3.5.1  .  Should I upgrade?   :)

Search for the differences:
http://www.cgal.org/Manual/3.5/doc_html/cgal_manual/STL_Extension_ref/Class_Object.html
http://www.cgal.org/Manual/3.6/doc_html/cgal_manual/STL_Extension_ref/Class_Object.html

Apart the release number in the footer (and numbers in links), there is only 
one visible difference... Guess what is the difference? 

You should upgrade to CGAL-3.6 (whose documentation you refer to), or not use 
is<T>(). If you want to stick to CGAL-3.5.1, instead of:
  obj.is<T>()
you can use:
  CGAL::object_cast<T>(&obj) != NULL

-- 
Laurent Rineau, PhD
Release Manager of the CGAL Project       http://www.cgal.org/
R&D Engineer at GeometryFactory           http://www.geometryfactory.com/