std way to remove multiple indices from an array at once

[aliak]

On Thursday, 21 December 2017 at 15:59:44 UTC, Steven 
Schveighoffer wrote:
> Here's a similar solution with an actual range:
>
> https://run.dlang.io/is/gR3CjF
>
> Note, all done lazily. However, the indices must be 
> sorted/unique.
>
> -Steve

Noice! :D