Re: try and catch

But if you have that low-level pattern occurring more than one place in
your code, consider abstracting it using the template pattern (nothing
to do with templates), like

   const unsigned untilDoomsday = unsigned(-1);

   struct Retry
   {
       bool operator( unsigned maxTries ) const

       {
           while( maxTries > 0 )
           {
               try
               {
                   doIt();
                   return true;
               }
               catch( std::exception const& x )
               {
                   onException( x );
               }
               if( maxTries != untilDoomsday ) { --maxTries; }
           }
           return false;
       }

       virtual void doIt() const = 0;
       virtual void onException( std::exception const& x ) const {}
   };