After having read http://www.boost.org/doc/libs/1_35_0/libs/iterator/doc/index.html I have been left, believing that the new iterator concepts will allow me to create an iterator that may return a proxy instead of a reference. I tried to do this by using the iterator_facade template, and for the "Reference" parameter I specified a proxy class that has a conversion operator to the "Value" type. This almost works, but fails for expressions of Val v = it[n]; expressions, because iterator facade does not return "Reference" objects in that case, but operator_brackets_proxy objects that are convertible to "Reference". So I am wondering if I understand something wrong? Isn't the decoupling of access and traversal meant to allow "Reference" be a proxy object? Any hints appreciated! -- _________________________________________ _ _ | Roland Schwarz |_)(_ | aka. speedsnail | \__) | mailto:roland.schwarz@chello.at ________| http://www.blackspace.at