There are certain optimizations you can only make with unsafe, because the borrow checker is smart, but not all-knowing. There have been countless discussions h

There are certain optimizations you can only make with unsafe, because the borrow checker is smart, but not all-knowing. There have been countless discussions how unsafe isn't the ideal name. It should be more like in the meaning of trust the programmer that they checked this manually. That being said, most rust programs don't ever need to use unsafe directly. If you go very low level or tune for prrformance it might become useful however. Or if you're lazy and just want to stop the borrow checker from saving your ass.