[datatable-help] setkey on .SD

[Arunkumar Srinivasan]

After seeing this post:
http://stackoverflow.com/questions/22863414/using-roll-true-with-allow-cartesian-true#comment34980343_22866917

I wrote to Matt about this as well. I've marked this issue to resolve it,
as I've not heard back on this issue from Matt yet. Thanks for reporting.

Arun.


On Sat, May 10, 2014 at 8:45 AM, Michael Smith <my.r.help at gmail.com> wrote:

> All,
>
> ?data.table says that `.SD` is read-only. However, I could use `setkey`
> on it. Is this officially supported, or is it dangerous to use on `.SD`,
> e.g. since in some corner cases some unexpected behavior could occur.
>
> Thanks,
>
> M
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