efficient idiomatic queue?

[David Eppstein]

In article <a22rhr$bn1$1 at panix3.panix.com>, aahz at panix.com (Aahz Maruch) 
wrote:

> Just to be a jerk, why not use a dict with a couple of index variables?

Maybe you could unpack that a little? dicts are useful but AFAIK they 
aren't the same thing as queues, index variables or no.
-- 
David Eppstein       UC Irvine Dept. of Information & Computer Science
eppstein at ics.uci.edu http://www.ics.uci.edu/~eppstein/