Can't use variadic arguments to functions that use templates

[Jesse Phillips]

On Sunday, 21 July 2013 at 07:22:08 UTC, JS wrote:
> void foo(T...)(T t)
> {
>     pragma(msg, B(t));
> }
>
> void main() {
>     foo("x", "a", "b");
> 	din.getc();
> }
>
>
> does work. I need to have B generate compile time code so it is 
> efficient. Your method calls an actual function at runtime so 
> it is nearly as fast as it can be.

My method doesn't make any calls, your foo is a called at 
runtime. There is no way to observe a function at compile time; 
ctfeWriteln does not exist.

Also don't stringof variable v (I assume you want the value and 
not the symbol concatenated.

template B(T...) {
	string B(T b) {
		string s;
		foreach(Type; T) pragma(msg, Type.stringof);
		foreach(v; b) s ~= v;
		return s;
	}
}

string foo(T...)(T t)
{
	return B(t);
}

void main() {
    enum forced = foo("x", "a", "b");
	pragma(msg, forced);
	din.getc();
}