simple (I think) eponymous template question ... what is proper idimatic way ?

[Alexandru Ermicioi]

On Tuesday, 17 August 2021 at 19:53:52 UTC, james.p.leblanc wrote:
>
> Wow!  That is absolutely beautiful ... I had never seen (or even
> imagined) a recursive template!  This expands my mind in a good
> way ... and is going into my toolbox immediately.
>
> Best Regards,
> James

Just don't over rely on it. It can cause compilation slowdowns, 
so avoid it if you can.