cmake/FindCXXFeatures/cxx11-test-variadic_templates.cxx

   1 int Accumulate()
   2 {
   3         return 0;
   4 }
   5
   6 template<typename T, typename... Ts>
   7 int Accumulate(T v, Ts... vs)
   8 {
   9         return v + Accumulate(vs...);
  10 }
  11
  12 template<int... Is>
  13 int CountElements()
  14 {
  15         return sizeof...(Is);
  16 }
  17
  18 int main()
  19 {
  20         int acc = Accumulate(1, 2, 3, 4, -5);
  21         int count = CountElements<1,2,3,4,5>();
  22         return ((acc == 5) && (count == 5)) ? 0 : 1;
  23 }