Reset Range

[tcak via Digitalmars-d-learn]

I have never interested in "Range" topic till now, but with 
Walter's presentation, I took a look at it today.

Ali has a nice lesson page about it 
(http://ddili.org/ders/d.en/ranges.html).

What I don't get is the mechanism to reset a range. I mean, you 
use a range with foreach, but then it is totally consumed. I 
cannot use it again. Because it will be empty. No special 
property function is defined for this. Maybe the reason I don't 
understand it is that it doesn't fit to my needs.