title: Does boost::any need RTTI?
body: <p>On the Boost web site I found no information regarding the use or RTTI by boost::any.</p>
  
  <p>I read in a few places that this is a requirement, but then I built a simple test project, and it builds both with and without RTTI.</p>
  
  <p>So, is RTTI, with its performance and memory issues, needed by boost::any and similar classes?</p>