From cf0c9bc16260c8a45f2f01321e368efa9ec679c3 Mon Sep 17 00:00:00 2001
From: Dan Gohman
ilists have another speciality that must be considered. To be a good +
ilists have another specialty that must be considered. To be a good citizen in the C++ ecosystem, it needs to support the standard container operations, such as begin and end iterators, etc. Also, the operator-- must work correctly on the end iterator in the