Seems to me like the only way to write functions/classes taking
variadic templates is by recursion. Is that true? Can the below work,
for iteration?

template<class    T>
auto func(const T&    t){

 std::initializer_list<?> ilist = {t   }; //what should go here <?>//
  for(const auto& arg : ilist)
       //use arg//
}


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