Comment by flohofwoe

Dynamic arrays like std::vector must be tweaked for a special use case as well, for instance it is quite essential to pre-allocate the array to a capacity of the expected number of entries using std::vector::reserve() so that no excessive re-allocation takes place while the array grows. Also special care must be taken if the objects have an expensive copy operation (that's where the new move-semantic in C++11 may help a lot).