<div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="im"> </div>I have filed a new ticket #3386. I do believe this feature to be of<br> general interest, so I think a library implementation is preferable<br> to me hacking my own.<br> <br> You'd be the one implementing it? Any idea when it might become<br> available?<br></blockquote><div><br>I would advise against modifying adjacency list directly. The change is too intrusive. Creating new selectors and specializing the container generation logic can be accomplished without changes to the adjacency_list and will have the effect.<br> <br>Also, I think this approach follows actually matches the design of the data structure more closely. It assigns the allocator to the container, not the graph, which doesn't actually allocate anything.<br><br></div> </div>Andrew Sutton<br><a href="mailto:andrew.n.sutton@gmail.com">andrew.n.sutton@gmail.com</a><br>