Typesafe variadics in any position

[Steven Schveighoffer]

On Tue, 26 Feb 2013 15:36:11 -0500, Andrej Mitrovic  
<andrej.mitrovich at gmail.com> wrote:

> On Tuesday, 26 February 2013 at 20:29:51 UTC, Steven Schveighoffer wrote:
>> Would it be something people want?
>
> Yes. Also related: http://d.puremagic.com/issues/show_bug.cgi?id=8687
>
> One extremely common and important use-case of allowing it is this:
>
> foo(string[] args..., string file = __FILE__, size_t line = __LINE__);
>
> Right now as soon as you introduce variadics you can forget about using  
> __FILE__/__LINE__ at runtime (unless you resort to some inner-template  
> tricks, but that only works in some cases methinks, probably not at  
> runtime).

Well, except that example wouldn't work :)

This would though:

foo(string[] args..., size_t line = __LINE__, string file = __FILE__);

Excellent use case though!

-Steve