Idiomatic adjacent_difference

[Edwin van Leeuwen via Digitalmars-d-learn]

On Friday, 16 October 2015 at 11:43:16 UTC, Guillaume Chatelet 
wrote:
> On Friday, 16 October 2015 at 11:38:35 UTC, John Colvin wrote:
>
> Nice !
> I wanted to use lockstep(r, r.dropOne) but it doesn't return a 
> Range :-/
> It has to be used in a foreach.

Instead of lockstep you can always use zip (which is the same but 
returns a range)


zip(r, r[1..$]).map!((t) => t[1]-t[0]);