CGAL users discussion list

[Eric Berberich <>]

Shi Yan wrote:
> hello guys,
>
> i have a halfedge handle which i need to check its validity after a
> set of operations, but i don't know how.
>
> can i do something like if( h == NULL ) , where h is the halfedge handle?
>
> thank you.

In Arrangements we have:

        Halfedge_handle invalid_he;

        if (h == invalid_he) {
          // ... my code
        }

eriC