From: daniel.kruegler@googlemail.com   
      
   On 2012-02-07 01:00, Frank Birbacher wrote:   
   >> template  struct   
   >> deduce_function  { typedef   
   >> std::function  type; };   
   >   
   > Wow, what does that do? I haven't yet come across a double ellipsis. I   
   > can think of template template parameters, but a concrete function   
   > type cannot have such arguments, does it? Please provide an example   
   > that invokes this specialization.   
      
   It just captures function types with ellipses, e.g. consider printf's   
   function type (modulo linkage) void(const char*, ...). Or expressed as a   
   lambda expression   
      
   [](const char*, ...) { }   
      
   But I was over-engineering here, std::function does not promise to hold   
   such entities, given it's specification to solely match   
      
   template   
   class function;   
      
   > I'm considering making the example complete and providing it to   
   > Boost.Function. Would you agree on this?   
      
   Sure.   
      
   Greetings from Bremen,   
      
   Daniel Krügler   
      
      
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