get number of columns and rows in an ndarray.

[Ilya Yaroshenko via Digitalmars-d-learn]

On Wednesday, 15 June 2016 at 21:51:25 UTC, learner wrote:
> Hi,
>
> How can i get the number of cols and rows in and ndarray that 
> has already been created?
>
> learner

Also `sl.length!0`, `sl.length!1`, etc --Ilya