title: Subclass/inherit standard containers?
body: <p>I often read this statements on Stack Overflow. Personally, I don't find any problem with this, unless I am using it in a polymorphic way; i.e. where I have to use <code>virtual</code> destructor.</p>
  
  <p>If I want to extend/add the functionality of a standard container then what is a better way than inheriting one? Wrapping those container inside a custom class requires much more effort and is still unclean.</p>