Function that accepts both lvalue and rvalue arguments

Question

Is there a way to write a function in C++ that accepts both lvalue and rvalue arguments, without making it a template?

For example, suppose I write a function

Answer 1

Be bold, embrace generic forward functions and name them well.

template
auto stream_meh_to(Stream&& s) 
->decltype(std::forward(s) << std::string{/*   */}){
    return std::forward(s) << std::string{"meh\n"};}

Note that this will work with anything that will make sense for it to work, not only ostreams. That is a good thing.

If the function is called with an argument that doesn't make sense, it will simply ignore this definition. Incidentally, this works better if indentation is set to 4 spaces. :)

---

This is the same as Cube's answer, except that I am saying that it is, when possible, more elegant to not check for specific types and let generic programming do its thing.