Vicente J. Botet Escriba wrote:
My concern is very simple:
The page http://www.boost.org/doc/libs/1_51_0/libs/range/doc/html/range/concepts/sing... is crystal clear. It says that any SinglePassRange must implement the expression boost::begin(a) where a is a model of a SinglePassRange. This is not actually a requirement on any model of a SinglePassRange but rather a requirement on boost::begin. But boost::begin is not supplied by the user! This documentation doesn't tell me what operation the type argument has to support in order to be used as argument to a range. It's just non-sensical and therefore confusing. There is nothing on this page which would indicate to me that something like <vector> would satisify the concept. The page is does not document a "concept" in the C++ manner.
I disagree here. The requirement is on the expression boost::begin(a) not on how this expression can be provided.
Ahhh - this is the crux of my complaint. I would be curious to hear the opinions of some of our well know "concept gurus" on this page and the question I've raised about it. Robert Ramey