Quick help on version function parameter

[Jonathan Marler via Digitalmars-d-learn]

On Wednesday, 18 February 2015 at 23:49:26 UTC, Adam D. Ruppe 
wrote:
> I'd write a foo_impl which always takes a parameter. Then do 
> the versioned foo() functions which just forward to it:
>
> void foo_impl(int x) { long function using x here }
>
> version(globals) {
>    int x;
>    void foo() {
>       foo_impl(x);
>    }
> } else {
>    void foo(int x) { foo_impl(x); }
> }
>
> Minimal duplication with both interfaces.

That kinda defeats the purpose of why I want this.  It's for 
performance reasons.  I need one version to have NO arguments and 
one version to have one ref argument.