[Boost-users] [BGL] null_vertex()

Subject: [Boost-users] [BGL] null_vertex()
From: Andreas Fabri (andreas.fabri_at_[hidden])
Date: 2013-06-18 03:51:20

Hello,

I am wondering what the function
boost::graph_traits<G>::null_vertex()
http://www.boost.org/doc/libs/1_53_0/libs/graph/doc/Graph.html
is for, and why there is no equivalent
function null_edge()

best regards,

andreas

-- 
Andreas Fabri, PhD
Chief Officer, GeometryFactory
Editor, The CGAL Project
phone: +33.492.954.912    skype: andreas.fabri