From: mathias@gaunard.com   
      
   On 25/10/13 01:53, K. Frank wrote:   
   > Hello Group!   
   >   
   > If I am writing a function (or a class) that gets   
   > passed in a user-provided callback function, what   
   > would be a good, general-purpose choice for the   
   > argument type of the callback function?   
   >   
   > Would this be a good use of std::function?   
   >   
   > For example, let's say that my callback function   
   > takes a string and returns a bool.  Would something   
   > like   
   >   
   >     void registerCallback (std::function &cb);   
      
   It should be   
           void registerCallback (std::function   
   const &cb);   
      
   As said earlier, if you don't need to store that object, just use   
   templates instead.   
      
      
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