> mean that when the vector changes size, the vector needs to reallocate You can control how often the vector changes the size and a lot of times you can even p

> mean that when the vector changes size, the vector needs to reallocate You can control how often the vector changes the size and a lot of times you can even prevent that. > In Rust, since there are no move constructors, it's just a memcpy. memcpy is actually slower that move the ownership of a buffer, that's why you avoid copying as much as you can (std::vector also uses memcpy inside). > In Rust, this is tracked at compile time, and attempting to use after the move is a compile-time error. It is nice to get a misuse at compile time, but my point is that once you transfer the ownership of the pointer you shouldn't be using that unique_ptr anymore. I'm probably biased but I don't see this "accidental" misuse happening often (tbh I haven't seen it ever and I have seen some horrible things in C++ before)