--- "David M. Jones" <djones@keymark.com> wrote:
Hello all,
Hello, David.
If I have an adjacency_list g and I call g = g; all of the vertices and edges of g are removed. This is not what I would expect; I would expect that this operation would not change g.
Oooh, aliasing...
1. Is this the desired behavior? (It seems different than what other types do.)
Looking at <boost/graph/detail/adjacency_list.hpp>, I see that the member operator=, before copying, clears its owner of its vertices and edges without first checking if *this != g. (Basic question: is such checking possible? I tried a couple of times without success.) This is true for both subclasses of detail::adj_list_helper. Not sure if it's desired, though.
2. Is this issue old news? (I couldn't find it on the mailing list archives but it may well be there.)
I'm curious as to where one would use g = g. Cromwell Enage __________________________________ Do you Yahoo!? Take Yahoo! Mail with you! Get it on your mobile phone. http://mobile.yahoo.com/maildemo