There is also a very worrying problem: Many languages do not support proper arrays. Languages like Java and most scripting languages store all objects on the heap which means an object array is actually an array of pointers. If you are iterating through an array of pointers and following each pointer, you are no better off than if you were using a linked list. Iterating through an array of objects in Java is O(K√N). This can be mitigated by allocating all the objects in order right after each other, in which case the allocator will hopefully put them next to each other in memory. But if you are going to be allocating the objects at different times or shuffling them around, then you are out of luck.
— The Myth of RAM
Publié le 29 octobre 2016.