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   comp.lang.c++.moderated      Moderated discussion of C++ superhackery      33,346 messages   

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   Message 32,376 of 33,346   
   Martin B. to Dave Abrahams   
   Re: Techniques to avoid minimal scope in   
   06 Jun 12 17:06:14   
   
   From: 0xCDCDCDCD@gmx.at   
      
   On 06.06.2012 06:31, Dave Abrahams wrote:   
   > on Tue Jun 05 2012, Mathias Gaunard  wrote:   
   >   
   >> On Jun 5, 3:43 am, "Martin B."<0xCDCDC...@gmx.at>  wrote:   
   >>   
   >>> # Question First   
   >>>   
   >>> Is there an elegant solution in C++ to prevent one from having to   
   >>> declare complex object variables that are only used within a loop   
   >>> outside of the loop for efficiency reasons?   
   >>   
   >> No. The only alternative I can think of is to not use loops, but   
   >> rather algorithms.   
   >   
   > By which I think you mean "yes" :-). Algorithms are an elegant   
   > abstraction that can hide the lack-of-elegance that may be required to   
   > achieve efficiency.   
   >   
      
   Mathias, Dave - I fail to see how an algorithm could help. I really   
   don't get it.   
      
   Can you provide an example where an algorithm based solution avoids the   
   inefficiencies associated with declaring the temporary complex object   
   inside the loop body?   
      
   cheers,   
   Martin   
      
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   bad C++ can be much, much worse than bad C code.   
      
      
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