Jeff
The solution did raise a question concerning the lower/upper iterators being used in this example. I expected to search getting iterators from referencing the index, but these iterators are obtained from the container level. Is this possible because there is only one index defined? If 2 or more indexes were defined on this container would the iterators used here work the same?
Regardless of the number of indices, the "container level" interface corresponds with that of the first index. This is mentioned in several places across the documentation, for instance at the end of http://www.boost.org/libs/multi_index/doc/tutorial/basics.html#multiple_sort
[...] Multi_index is a very impressive creation!
It was a lot of fun to write it. Glad it's useful to you. Joaquín M López Muñoz Telefónica Digital