Typesafe variadic functions requiring at least one argument

[kinke via Digitalmars-d-learn]

In case you want a compile error if no arguments are specified, 
you can use something like this:

void foo()() { static assert(0); }
void foo(int[] ints...) { assert(ints); }

void main()
{
     foo(1, 2, 3);
     foo();
}