expanding variadic into format

[Codifies]

On Wednesday, 31 October 2018 at 12:09:04 UTC, Stanislav Blinov 
wrote:
> On Wednesday, 31 October 2018 at 11:53:52 UTC, Codifies wrote:
>
>> void printValue(Font fnt,float x, float y, string frmt, ...)
>> {
>>     /* matrix math and other stuff removed for readability */
>>     string message = format(frmt, _arguments);
>
>>
>> is there some way to somehow transfer my input variadic into 
>> formats variadic ?
>
>>> Just to confirm, format there is std.format:format right?
>>> Because that isn't using C variadics, its using template 
>>> variadics.
>
> ...as in:
>
> ```
> void printValue(Args...)(Font fnt, float x, float y, string 
> frmt, auto ref Args args) {
>     // ...
>     import std.functional : forward;
>     string message = format(frmt, forward!args);
>     // ...
> }
> ```

thats fantastic thanks so much, can you explain a little more 
about whats going on here ?