Is there a way to tell if an auto ref parameter is by ref or by value?

[Anonymouse]

On Sunday, 10 May 2020 at 00:33:07 UTC, NaN wrote:
> Ie something like..
>
>
> auto Foo(T)(auto ref T x)
> {
>     static if (isByRef(x))
>     {
>     }
>     else
>     {
>     }
> }

__traits(isRef, x)