Joel de Guzman wrote:
David Abrahams wrote:
* Boost.Fusion interprets a pair<int*,int*> as a sequence of two values of type int*.
* Boost.Range interprets a pair<int*,int*> x as a sequence of x.second-x.first values of type int.
Oh man, Now I see the problem. Pardon my slowness!!! Well, it seems, this interpretation of Boost.Range for pair<T*,T*> (or in general, std::pair<iterator,iterator> is at the very least suspicious. If we all agree that pair<T,T> is a tuple (a sequence in Fusion's sense), then pair<T*,T*> shouldn't be any different. I'd say that treating std::pair<iterator,iterator> as a runtime sequence is the wrong generalization.
It cannot be helped. std::equal_range returns a std::pair<iterator,iterator>. You'll have to argue with Stepanov about it. -- Eric Niebler Boost Consulting www.boost-consulting.com