Variadic templates

[Daniel Keep]

rm wrote:
> 
> should this work:
> 
>>>>
> import std.stdio;
> 
> template Templ(T, R ...)
> {
>     static if (R.length) {
>         const char [] s = "yes";
> //        writefln(s);
>     } else {
>         const char [] s = "no";
> //        writefln(s);
>     }
> }
> 
> 
> void main()
> {
>      mixin Templ!(int,char);
>      writefln(s); // can't put this into the template
> }
> <<<
> 
> 
> It compiles, it runs fine, but I'm not using function templates.
> otoh, try to bring the lines commented out into play, it won't compile
> anymore.
> 
> bye,
> roel

That's because you can't have executable statements in a template.  I
really wish you could, tho.

If you want to write those out at COMPILE TIME, however, you can change

> writefln(s);

To:

> pragma(msg, s);

	-- Daniel

-- 
Unlike Knuth, I have neither proven or tried the above; it may not even
make sense.

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