This is a dynamic array (it can grow, but without moving memory).

* arr = qb_array_create_2(64, sizeof(struct my_struct), 256);
* ...
* res = qb_array_index(arr, idx, (void**)&my_ptr);
* if (res < 0) {
*       return res;
* }
* // use my_ptr, now even if there is a grow, this pointer will be valid.
* 

See Also: qbarray.h