[boost] [iterators] iterator_facade

From: Robert Jones (robertgbjones_at_[hidden])
Date: 2006-10-06 05:30:50

The boost documentation recommends implementing
iterator_core_access methods as private static members
and then making the class a friend of classes derived
from iterator_facade.

Why is this preferred to the approach of making
iterator_core_access a private base of iterator_facade?

Rob.