From: andreytarasevich@this.is.invalid   
      
   On 12/17/2012 9:06 PM, Paul D. DeRocco wrote:   
   >   
   > How do I declare a typedef for a pointer to a function that returns   
   > itself, meaning a pointer to another function of the same type?   
      
   There's no way to express such a type through the concepts used in   
   C/C++ type description system. Within that system this type infinitely   
   recursive. For this reason, any attempts to search for the proper   
   syntax are guaranteed to be doomed. It cannot possibly exist.   
      
   They only way to break the recursion is to go through the proverbial   
   "extra level of indirection" (not literal in this case),   
   i.e. introduce an extra intermediate type `T`, so that the function   
   returns `T` and then `T` transforms to a pointer to the function. And   
   this is exactly how the aforementioned GotW entry does it.   
      
   --   
   Best regards,   
   Andrey Tarasevich   
      
      
         [ See http://www.gotw.ca/resources/clcm.htm for info about ]   
         [ comp.lang.c++.moderated.    First time posters: Do this! ]   
      
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