Graph library: requested extension

From: Kevin S. Van Horn (kevin_vanhorn_at_[hidden])
Date: 2001-04-05 09:21:22

I'm writing code to read in and write out a particular instantion of the
adjacency_list<> template.  In doing so I find it convenient to start with
an empty graph (no vertices), then read in the number of vertices and make
the graph have that number.  The only way I have found to do this is with
the following ugly and somewhat inefficient piece of code:

  for (i = 0; i < nv; ++i)
    add_vertex(x);

It would be nice to be able to directly set the number of vertices after
construction.