Checking that a template parameter is an enum

[Meta via Digitalmars-d-learn]

On Thursday, 1 October 2015 at 22:41:21 UTC, Nordlöw wrote:
> Will this spare memory in DMD? If so there are a few traits 
> that should be update accordingly, for instance `allSatisfy` 
> and `anySatisfy`.
>
> Thanks!

Highly doubtful as CTFE already allocates like there's no 
tomorrow.