getNext

[Andrei Alexandrescu]

On 7/9/12 11:35 AM, Mehrdad wrote:
> If something is both an input range and an output range, then sure, it
> can have that capability. But being able to write to something is
> _orthogonal_ to whether you can read from it.

That is the case right now. The point is, with your design you need to 
add something extra to allow writing to elements of a single-pass range. 
So your design does not simplify things as much as it might seem.

Andrei