#include <iostream>
 
void append_to_stream(std::ostream &stream)
{ }
 
template <typename T, typename... Args>
void append_to_stream(std::ostream &stream, T &&first, Args&&... rest)
{
  stream << std::forward< T >( first );
  append_to_stream(stream, std::forward< Args >( rest ) ...);
}
 
typedef std::ostream & (&manip_t)( std::ostream & );
 
int main() {
 
append_to_stream(std::cout, 
                 "hello world",
                 static_cast< manip_t >( std::endl ),
                 static_cast< manip_t >( std::endl ) );
std::cout << "done\n";
}
 

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