Ranges and/versus iterators

[grauzone]

Steven Schveighoffer wrote:
> A while back, you identified one of the best interfaces for input ranges:
> 
> E* getNext();
> 
> Which allows for null returns when no data is left.  The drawback is 
> that E must be either referenced or allocated on the heap (providing 
> storage to the function is an option).  But the killer issue was that 
> safeD would not allow it.  However, in recent times, you have hinted 


Nullable!(E) getNext(); ?