Is it possible to "overload" based on visibility?

[60rntogo]

On Friday, 25 September 2020 at 18:58:54 UTC, H. S. Teoh wrote:
> You probably need to use the long-form of templates, with 
> separate function declarations, to accomplish this. E.g.:
>
> ...

Alright, but your example still contains shouldReturnByRef which 
presumably I need to implement myself. But that's an optimization 
detail that I'd rather leave up to the compiler, is that possible?