Reset Range

[Philpax via Digitalmars-d-learn]

On Saturday, 30 May 2015 at 08:36:02 UTC, tcak wrote:
> 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.

You take a copy of the range prior to iteration with the 'save' 
method (which all forward ranges have: 
http://dlang.org/phobos/std_range_primitives.html#isForwardRange) 
if you need to reuse it.