a91c4325   
   From: daniel.kruegler@googlemail.com   
      
   On 2011-10-05 00:41, Mathias Gaunard wrote:   
   > On Oct 4, 8:44 pm, "Martin B."<0xCDCDC...@gmx.at>  wrote:   
   >   
   >> Hmmm ... haven't some issues wrt. to forward declaring stuff   
   >> (templates?) been addresses in C++11?   
   >   
   > The default template parameters would be a problem to forward declare   
   > std::vector.   
      
   This wouldn't be the actual problem, I think. You could omit the default   
   template argument without a problem, which is typically sufficient for   
   most use-cases.   
      
   > I've never really understood why redefining default template   
   > parameters after a forward-declaration is ill-formed.   
      
   This is due to fact, because that follows the same rules like default   
   arguments of functions:   
      
   void foo(int = 42);   
   void foo(int = 42); // Ill-formed   
      
   HTH & Greetings from Bremen,   
      
   Daniel Krügler   
      
      
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