4 ms·But couldn't the hash be based on the object pointer or something?by infogulch 9y agoBut couldn't the hash be based on the object pointer or something?sushibowl 9y agoDoesn't work because the GC moves objects around in memorytzahola 9y agoNo, because the GC is free to move objects around to compact the heap.phpnode 9y agoNo, for reasons others have said, but they can use the pointer to deal with collisions