63b74654   
   From: marc.glisse@gmail.com   
      
   mike  wrote:   
      
   > Hi All, please consider the following simple snippet:   
   >   
   > #include    
   > #include    
   >   
   > struct Functor {   
   >  typedef int type;   
   >  int operator()(int t) {return t;}   
   > // int operator()(int& t) {return t;}   
   > };   
   >   
   > template    
   > struct RetType {   
   >  typedef typename Func::type param_type;   
   >  typedef decltype(Func().operator()(std::declval()))   
   > ret_type;   
   > };   
   >   
   > int main() {   
   >   RetType::ret_type i = 1;   
   > }   
   >   
   > I am struggling to modify decltype within the RetType struct to work   
   > with the second version of  Functor::operator() call where parameter   
   > is passed by reference.   
   > Any help is greatly appreciated.   
      
   std::declval   
   ?   
      
      
   --   
         [ See http://www.gotw.ca/resources/clcm.htm for info about ]   
         [ comp.lang.c++.moderated.    First time posters: Do this! ]   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)