Mercurial > hg
diff hgweb.cgi @ 16803:107a3270a24a
cleanup: use the deque type where appropriate
There have been quite a few places where we pop elements off the
front of a list. This can turn O(n) algorithms into something more
like O(n**2). Python has provided a deque type that can do this
efficiently since at least 2.4.
As an example of the difference a deque can make, it improves
perfancestors performance on a Linux repo from 0.50 seconds to 0.36.
author | Bryan O'Sullivan <bryano@fb.com> |
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date | Tue, 15 May 2012 10:46:23 -0700 |
parents | 85cba926cb59 |
children | 4b0fc75f9403 |