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January 21st, 2014, 12:09 PM
#7
Re: Problems with iterators
 Originally Posted by Paul McKenzie
At one of my jobs, the programmers there were doing basically the same thing as the OP. They could never figure out how to erase from a vector while looping -- you should have seen the creative ways that were done, all would eventually fail. Things like jumping over invalidated iterators, reseating the iterator, all sorts of things that made it a nightmare to maintain and work consistently.
I introduced them to std:  artition() and erase(), and all of those problems that were plaguing that part of the code (for months) became resolved in less than 5 minutes.
...and the moral of the story is to know your STL algorithms! 
PS I wish that c++ tutors and books would remember the STL and give all of it the coverage it deserves - not just vectors, maps and i/o streams if you're lucky.
Last edited by 2kaud; January 21st, 2014 at 12:59 PM.
All advice is offered in good faith only. All my code is tested (unless stated explicitly otherwise) with the latest version of Microsoft Visual Studio (using the supported features of the latest standard) and is offered as examples only - not as production quality. I cannot offer advice regarding any other c/c++ compiler/IDE or incompatibilities with VS. You are ultimately responsible for the effects of your programs and the integrity of the machines they run on. Anything I post, code snippets, advice, etc is licensed as Public Domain https://creativecommons.org/publicdomain/zero/1.0/ and can be used without reference or acknowledgement. Also note that I only provide advice and guidance via the forums - and not via private messages!
C++23 Compiler: Microsoft VS2022 (17.6.5)
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