Re: [Boost-users] [general/iostreams/iterators] Why not a forward and/or a random access istream iterator?

"Mats Eklund" writes:

Hello,

does anybody know whether there is something fundamentally wrong with designing an istream iterator that conforms with the forward, or even random access, iterator concepts?

Nope; there's nothing wrong with it. It can get tricky, though: to meet the forward iterator requirements (operator* must return a true reference), your iterator would have to keep an internal cache of the element being referenced. -- Dave Abrahams Boost Consulting www.boost-consulting.com