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My first reaction when I've read your comment was that it has to be because of sub-strings but as std::vector allocates memory again anyway that can't be too im
by bluecalm 11y ago
My first reaction when I've read your comment was that it has to be because of sub-strings but as std::vector allocates memory again anyway that can't be too important. Can you elaborate a bit? I am not a C++ programmer but I am sometimes curious so maybe I am missing something obvious.
- animefan 11y agoI wad confused too but looking at the definition of realloc, it will sometimes allocate adjacent memory and sometimes allocate new memory and perform a move. In which case copying the std::string values might not be valid.
- bluecalm 11y agoWell, but std::vector always performs a move so any pointers to sub-strings won't be valid anyway from what I understand. I am probably just not getting something but it really seems like it should just use realloc. Maybe it has something to do with thread safety though as I don't think there are any guarantees for realloc.