Thread: Iterator Confusion

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  1. 03-12-2009 #1
    laserlight
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    Quote Originally Posted by leeor_net
    This now works as I expect it to. Now I'm interested in why it works like this so I can have a better understanding of how to properly use iterators.
    When an element is erased from a std::map, iterators that refer to it are invalidated. Therefore we should advance the iterator before using it to erase the element, and post-increment works just right to do that.
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  2. 03-12-2009 #2
    leeor_net
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    Ah, I understand now. That makes perfect sense. I knew a bit about invalidating iterators but never thought I had come across it.

    Thank you!
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