.. Copyright David Abrahams 2006. Distributed under the Boost
.. Software License, Version 1.0. (See accompanying
.. file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
The permutation iterator adaptor provides a permuted view of a given
range. That is, the view includes every element of the given range but
in a potentially different order.
