1b4239cb   
   From: daniel.kruegler@googlemail.com   
      
   On 2012-04-18 13:57, asif.lse wrote:   
   > I want to specify only ONE return type in this function.   
      
   What do you precisely mean by "this" function?   
      
   > I suspect I could auto here and use decltype to declare a pointer to   
   > the returned type so that I could assign that pointer/ref to a   
   > pointer/ref to an abstract class for polymorphic access. I haven't   
   > read up much on these new C++ features but could somebody help me   
   > here? I want to use stack variables and yet want to execute   
   > polymorphic code. The problem is that I have to specify the concrete   
   > class name and return type. So, apparently, there is no   
   > polymorphism. I am just thinking off the top of my head but I feel   
   > that this is very doable. Can I use templates here?   
      
   You should think about keeping the polymorphic behaviour *within* the   
   return type. std::shared_ptr is similar, because the dynamic   
   polymorphism is still provided by the contained object. Think of it as   
   some form of adapter technique. Other examples with similar   
   characteristics are std::function: The function call expression is   
   potentially polymorphic, depending on the provided callable object.   
      
   HTH & Greetings from Bremen,   
      
   Daniel Krügler   
      
      
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