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From:Tomalak Geret'kal Date:March 23 2011 2:13pm
Subject:Re: growth behavior of std::vector
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On 23/03/2011 14:11, Warren Young wrote:
[snip]
>
> If you are wrong and your vector implementation's growth
> strategy is the common 2x one, you have only one
> reallocation and copy unless you are wrong by a factor of 2
> * (1 + fudge_factor). If the fudge factor is 10%, that means
> you have to underestimate the number of returned records by
> more than 220% to get two or more reallocations and copies.
>

This notion of "common" is still up for debate.

MSVS uses 1.5x; GCC uses 2x. I'd say that's about half and 
half, until people seriously start using comeau, clang or 
ICC in production.

Tom
Thread
StoreQueryResults destructor runs without end...Paul Dalach22 Mar
Re: StoreQueryResults destructor runs without end...Dino Korah22 Mar
  • Re: StoreQueryResults destructor runs without end...Paul Dalach23 Mar
    • Re: StoreQueryResults destructor runs without end...Warren Young23 Mar
      • Re: StoreQueryResults destructor runs without end...Warren Young23 Mar
        • Re: StoreQueryResults destructor runs without end...Tomalak Geret'kal23 Mar
          • Re: StoreQueryResults destructor runs without end...Mickael Wolff23 Mar
            • Re: StoreQueryResults destructor runs without end...Tomalak Geret'kal23 Mar
              • Re: StoreQueryResults destructor runs without end...Mickael Wolff23 Mar
                • Re: StoreQueryResults destructor runs without end...Tomalak Geret'kal23 Mar
          • Re: StoreQueryResults destructor runs without end...Warren Young23 Mar
            • Re: StoreQueryResults destructor runs without end...Tomalak Geret'kal23 Mar
              • List etiquette - please use good email subjects :)Joel Fielder23 Mar
                • Re: List etiquette - please use good email subjects :)Tomalak Geret'kal23 Mar
                  • Re: List etiquette - please use good email subjects :)Paul Dalach23 Mar
                    • Re: List etiquette - please use good email subjects :)Dino Korah23 Mar
                      • Re: StoreQueryResults destructor runs without end...Paul Dalach23 Mar
                      • Re: StoreQueryResults destructor runs without end...F.N. Bruggeman23 Mar
                    • Re: List etiquette - please use good email subjects :)Joel Fielder23 Mar
              • Re: growth behavior of std::vectorWarren Young23 Mar
                • Re: growth behavior of std::vectorTomalak Geret'kal23 Mar
                  • Re: growth behavior of std::vectorJonathan Wakely23 Mar
                    • Re: (OT) growth behavior of std::vectorTomalak Geret'kal23 Mar
                      • Re: (OT) growth behavior of std::vectorJonathan Wakely23 Mar
                • Re: (OT) growth behavior of std::vectorTomalak Geret'kal23 Mar
            • Re: StoreQueryResults destructor runs without end...Tomalak Geret'kal23 Mar
              • re: (OT) growth behaviour of std::vector [was Re: StoreQueryResultsdestructor runs without end...]Tomalak Geret'kal23 Mar
        • Re: StoreQueryResults destructor runs without end...Warren Young23 Mar
Re: StoreQueryResults destructor runs without end...Dino Korah23 Mar