How to set default for a vector in a method
<p>I'm having a scenario where I need to add a vector as an input/output [reference]parameter to  existing legacy code. And in order to avoid any errors, I need to make it a default parameter.</p>

<p>Could someone please suggest how to add a vector as a default parameter to a method. I'm actually dubious if this is possible. Also, if this is possible, with what vallue should the vector be intialized with?</p>
