constructed variadic call

[Erik Smith via Digitalmars-d-learn]

> I don't think it's possible to call a vararg function whose 
> number of arguments is only known at runtime, for the same 
> reasons it is impossible in C [1].
>
> Your switch statement is probably the best you can do, other 
> than rewriting the API to not use varargs (which, depending on 
> what the function is doing, I would recommend). You can 
> possibly use string mixins or static foreach to avoid repeating 
> the case clauses.
>
> [1] Populating a va_list: 
> http://stackoverflow.com/questions/988290/populating-a-va-list

That was fast :).  The generation idea helps a little - thanks.  
It works though and I can't use va_list in this case.

erik