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I saw an answer a while ago on StackOverflow regarding a provably optimal std::vector-like data structure, which, if I remember correctly, lazily copied elements onto a larger vector so that it wouldn't cause a huge pause every time the vector reallocated.

I remember it needed O(sqrt(n)) extra space for bookkeeping, and that the answer linked to a published paper, but that's about all I remember.

The problem: I'm having a really hard time searching for it -- you can imagine that searches like optimal vector or based on the tag vector are getting me nowhere.

How can I search for questions like this?

I was actually considering posting this on StackOverflow, and waiting for it to be closed as a dupe... would that be considered bad practice? (!)

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@RobertHarvey: Yeah, but none of those results seem to be that question... – Mehrdad Jan 26 '13 at 19:29
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Then I'd say go ahead and post it. You did due diligence. – Robert Harvey Jan 26 '13 at 19:30
    
@RobertHarvey: Haha okay thanks. – Mehrdad Jan 26 '13 at 19:30
    

I suggest at least starting to ask the question on SO. As you type it, you're essentially doing a very detailed search. The words of your question, the code snippets you enter, will all be used to get you a list of questions similar to your before you subbmit it.

  • see the right one? Give up on asking and use it
  • don't see the right one? Ask without guilt

And after all that, someone might close you as a dupe anyway. Just don't feel bad about that and be happy they found it.

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