Thread: "Filtering" a buffer(a std::deque here)-Which method is better?

  1. #1
    [](){}(); manasij7479's Avatar
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    Feb 2011

    "Filtering" a buffer(a std::deque here)-Which method is better?

    What I did..
    for (auto temp :mybuffer)
             <do something with temp>
    mybuffer = newbuffer;
    And what I thought could work better but could not find a way, without using an invalid iterator.
    1.Iterate through the extent of the original size of 'mybuffer'
    2.instead of pushing the temp 's which do not satisfy some_condition into a new buffer, push them on the back of my_buffer itself .

    Are the two ways essentially same, or is the later better(In that case, suggest an elegant way of doing so)?
    Or is there a process even better ?

  2. #2
    C++ Witch laserlight's Avatar
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    Oct 2003
    I would consider if one or more standard generic algorithms could come in handy here. Things like std::remove_if and std:artition come to mind.
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
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