getNext

[Mehrdad]

On Monday, 9 July 2012 at 15:34:35 UTC, Mehrdad wrote:
> The latter point is moot here, and the former is _clearly_ not 
> something an "input range" should have, because it's a notion 
> of output...

Er, let me rephrase that:

The former is _clearly_ not a property of "input ranges".

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.