| commit | f7328d026be6c2ee0bdd8dac32243f73b6b0563a | [log] [tgz] |
|---|---|---|
| author | Raymond Hettinger <python@rcn.com> | Tue Sep 14 19:40:15 2010 +0000 |
| committer | Raymond Hettinger <python@rcn.com> | Tue Sep 14 19:40:15 2010 +0000 |
| tree | 7561facfb16a296b94a81652a69752313f2d7b11 | |
| parent | 328ec7455f11f14cb4bf7077c6a4fa48b2356433 [diff] |
Improve iteration speed by only proxying back links. The forward links are hard references. The sentinel element is also a weakref proxy (to break a forward cylce wrapping around the sentinel).