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A Question on estimating +arrayWithCapacity
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A Question on estimating +arrayWithCapacity


  • Subject: A Question on estimating +arrayWithCapacity
  • From: Steve Cronin <email@hidden>
  • Date: Fri, 09 Jan 2009 08:07:25 -0600

Folks;

Under some circumstances I'm not sure how big a mutable object might need be.
So is there any guidance on coming up with a value for capacity?


Assume for these cases that reasonable guesses range from say 2 - 5000...

I assume it's wasteful to just do a land grab with +arrayWithCapacity: 5000
but I also assume that it's unnecessarily burdensome to do +arrayWithCapacity:2.


So is the 'best' +arrayWithCapacity:2500?

It feels a little like premature optimization, but I do have to provide a value in the code....
Thanks for any feedback!
Steve
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