C++ variadic template function parameter with default value

Question

I have a function which takes one parameter with a default value. Now I also want it to take a variable number of parameters and forward them to some other function. Function pa

Answer 1

Another approach would be to pass variadic arguments through a tuple.

template 
void func (std::tuple t, SomeSpecialType num = fromNum(5))
{
  // don't forget to move t when you use it for the last time
}

Pros : interface is much simpler, overloading and adding default valued arguments is quite easy.

Cons : caller has to manually wrap arguments in a std::make_tuple or std::forward_as_tuple call. Also, you'll probably have to resort to std::index_sequence tricks to implement the function.